1: Vinyl Asylum, Why do you feel it is compulsory to attain a 1:7 ratio... (0.00)
Posted by Lew on 2021-03-01, 11:18:37 (96.255.88.163)
between the internal resistance of the cartridge and the load at the phono input? I think of a ratio of 1:5 or 1:7 as a minimum ratio, and I usually find that ratios greater than those are also OK. Al .......

2: Tube DIY Asylum, RE: SRPP (0.00)
Posted by Lew on 2021-02-26, 09:09:09 (74.96.190.16)
I will go out on a limb and say that when you take the output from the cathode of the top tube, as in your schematic, the output impedance is low. That is one of the touted advantages of SRPP. ::: TOP .......

3: Tweakers' Asylum, RE: Mundorf ECap Direction (0.00)
Posted by Lew on 2021-02-21, 13:10:40 (74.96.190.16)
Part of the question is whether bipolar electrolytic construction is such that there even is an "outer foil" to worry about. My guess would be no, but it would be a guess. .......

4: Tweakers' Asylum, RE: Mundorf ECap Direction (0.00)
Posted by Lew on 2021-02-21, 13:08:40 (74.96.190.16)
Is it bipolar or no? If bipolar electrolytic, those are usually derived from two polar electrolytics, so in a sense you could say they are not subject to the "outer foil" orientation that is preferred .......

5: Vinyl Asylum, A solution to a non-existent problem (0.00)
Posted by Lew on 2021-02-19, 15:16:02 (74.96.190.16)
nt .......

6: Vinyl Asylum, Present tense? (0.00)
Posted by Lew on 2021-02-19, 15:06:05 (74.96.190.16)
The Citation 11 and 12 that at least I am thinking of came out in the mid- to late 1970s, and was some of their first SS products. I would certainly agree that any vintage HK gear using tubes was very .......

7: Vinyl Asylum, RE: Replacing My Electronics - Finally! (0.00)
Posted by Lew on 2021-02-19, 15:02:27 (74.96.190.16)
The Citation 11 received rave reviews in TAS by HP. When that happened, my audiophile friend and I felt we needed to have a listen. In keeping with John's opinion, we found it to be.... not so good. I .......

8: Vinyl Asylum, Mea culpa (0.00)
Posted by Lew on 2021-02-18, 19:28:44 (74.96.190.16)
Here's the thing with that: It's a drive system with a lot of compliance. I had totally forgotten the mechanism, so thanks for correcting me. I hadn't thought about that Clearaudio design in ages. On .......

9: Vinyl Asylum, RE: The magnetic drive (0.00)
Posted by Lew on 2021-02-18, 13:54:02 (74.96.190.16)
If you think about it, all DD turntables are "magnetic drive". Another case of hype. .......

10: Vinyl Asylum, RE: Already here, Mag-Lev TT.... (0.00)
Posted by Lew on 2021-02-18, 10:18:13 (74.96.190.16)
It's kind of like "Happy Fun Ball" from the now ancient SNL skit. .......

11: Vinyl Asylum, I'm reluctant to buy any LPs these days,... (0.00)
Posted by Lew on 2021-02-17, 16:37:43 (74.96.190.16)
because I have lost track of what I do and don't already own. This is in part due to my having "inherited" about 900 jazz LPs, from a close friend. Adding that many LPs at one swoop muddles the mind. .......

12: Vinyl Asylum, RE: Help - Vinyl noob with Denon DP-3000 'table and Denon DA-401 arm (0.00)
Posted by Lew on 2021-02-14, 08:48:52 (74.96.190.16)
Nagaoka? Consider the best of the Nagaoka's you can get for your price point. You probably need a high output cartridge of some kind for that phono stage, so MM types are in play. .......

13: Vinyl Asylum, RE: Another thread about the Hagerman Bugle 2. (0.00)
Posted by Lew on 2021-02-13, 11:07:16 (74.96.190.16)
Tre', What is the reason for R1? Seems to be in the wrong place for a gate-stop function. Thanks. .......

14: Vinyl Asylum, I heard him in concert not more than two years ago,... (0.00)
Posted by Lew on 2021-02-12, 15:53:55 (74.96.190.16)
and you would never have said his death, even at age 79, was to be expected. He was as dynamic and lively as ever. In fact, I would say he got better and better with age. This news is quite a shock to .......

15: Vinyl Asylum, RE: Chick Corea dead at 79 (0.00)
Posted by Lew on 2021-02-12, 08:06:02 (74.96.190.16)
One of the greatest jazz pianists who ever lived. I am so sorry to read this. I am a huge fan and always will be. .......

16: Tube DIY Asylum, RE: Source for Point to Point Wiring terminals ? (0.00)
Posted by Lew on 2021-02-11, 08:23:21 (74.96.190.16)
Check the michael percy audio catalog online. He's got some of those, depending on exactly what you need. .......

17: Vinyl Asylum, You could kind of tell that about BR on the Carson show (0.00)
Posted by Lew on 2021-02-09, 18:26:38 (74.96.190.16)
There was that nasty streak underneath, but Johnny was such a nice guy, and BR knew the value of being in Johnny's good graces, so he stifled himself more or less. .......

18: Vinyl Asylum, Two degrees of azimuth error... (0.00)
Posted by Lew on 2021-02-09, 18:20:34 (74.96.190.16)
is actually quite a bit of error. .......

19: Vinyl Asylum, With a very experimental VTA (0.00)
Posted by Lew on 2021-02-09, 18:18:49 (74.96.190.16)
Fremer ought to do a review on this revolutionary cantilever. .......

20: Tweakers' Asylum, RE: Thanks (0.00)
Posted by Lew on 2021-02-04, 09:02:16 (74.96.190.16)
The deal with a dedicated line is to isolate the grounds also from the house ground. To do that, you need to create a grounding system. One approach is to sink a long copper rod (8 to 12 feet?) into t .......

21: Vinyl Asylum, Agree (0.00)
Posted by Lew on 2021-02-04, 08:53:29 (74.96.190.16)
nt .......

22: Vinyl Asylum, Triton X-100 (0.00)
Posted by Lew on 2021-02-04, 08:35:49 (74.96.190.16)
I don't doubt you or your story about a leaky bottle of Triton X-100, but I do very much doubt that concentrated Triton X-100 could ever eat through its supplied plastic bottle. Triton X-100 is an imp .......

23: Vinyl Asylum, Well, apparently the whole system was unfamiliar to you, so... (0.00)
Posted by Lew on 2021-02-02, 19:38:05 (74.96.190.16)
maybe not fair to blame the Thorens for underwhelming sound. .......

24: Vinyl Asylum, Mikey needs a haircut. (0.00)
Posted by Lew on 2021-02-02, 19:36:05 (74.96.190.16)
Just like me. If only that WAS a Buick, he could drive it to his barber. Assuming both were vaccinated, of course. .......

25: Vinyl Asylum, Yes (0.00)
Posted by Lew on 2021-01-31, 15:43:38 (74.96.190.16)
nt .......

26: Vinyl Asylum, RE: old timey turntable isolation (0.00)
Posted by Lew on 2021-01-30, 10:32:38 (71.163.180.70)
I don't think the floor joists are included in the electrical analogue model, fortunately. Else you'd have to worry about the provenance of your floor. .......

27: Vinyl Asylum, I do use a concrete paver available from Home Depot, for isolation (0.00)
Posted by Lew on 2021-01-30, 10:13:15 (71.163.180.70)
Who knew the idea dates back to 1959? I don't own a spring-suspended turntable, however. The beauty of the paver from Home Depot? It probably cost me under $10. Seems to work at least "fine". ::: TOPI .......

28: Vinyl Asylum, Nordost Red Dawn (0.00)
Posted by Lew on 2021-01-28, 19:31:09 (71.163.180.70)
Is an older brew from Nordost. In my system, Red Dawn speaker cables made my ears bleed. Intolerably bright or strident or words to that effect. This was between an OTL tube amp and a pair of Sound La .......

29: Vinyl Asylum, I don't think the pandemic is going to be "over",... (0.00)
Posted by Lew on 2021-01-28, 09:45:47 (71.163.180.70)
in the sense that it will be like flipping a switch. The virus is here to stay, and it is up to us to find a way to get back to normal while protecting ourselves from it long term. The vaccines appear .......

30: Vinyl Asylum, Very nice grouping... (0.00)
Posted by Lew on 2021-01-27, 07:37:46 (71.163.180.70)
I love Coleman Hawkins, but most of my Hawkins LPs are probably 12-inch reissues of the stuff you've got there. Thanks for posting. .......

31: Vinyl Asylum, 12" cocobolo should be great with Urushi (0.00)
Posted by Lew on 2021-01-25, 18:55:40 (71.163.180.70)
That's one of their highest effective mass options, if not THE highest. Great combination. It took me a few years to admit to myself that there was something "missing" from the performance of the Urus .......

32: Vinyl Asylum, RE: Koetsu magic (0.00)
Posted by Lew on 2021-01-24, 12:18:04 (71.163.180.70)
I own an Urushi too. I can never keep straight whether mine is a Tsugaru or Wajima variant. But what is the effective mass of your 3P? I found that my Urushi likes very high effective mass tonearms. I .......

33: Vinyl Asylum, RE: Denon AU-250 -- is it worth using vs. an AU-300LC? (0.00)
Posted by Lew on 2021-01-24, 08:07:20 (71.163.180.70)
I have been around for a long time, and I have never heard of the Denon DL 300 cartridge. However, if the AU 250 is specifically tailored to the DL 300, perhaps you ought to check whether it is also w .......

34: Vinyl Asylum, "He pulled a gun on the Ramones"... (0.00)
Posted by Lew on 2021-01-18, 10:35:32 (71.163.180.70)
Shows he may have had some musical taste. .......

35: Vinyl Asylum, It's counter-intuitive, but... (0.00)
Posted by Lew on 2021-01-18, 10:34:06 (71.163.180.70)
at higher temperatures of the solder gun, you can get in and out much faster with actually less risk of overheating and damaging a part. The change from ~670 degrees with my Velleman to 750 degrees wi .......

36: Vinyl Asylum, RE: Craft Recordings one step of "Lush Life"..... (0.00)
Posted by Lew on 2021-01-17, 10:37:51 (71.163.180.70)
This is my favorite treatment of Lush Life by Coltrane... .......

37: Tweakers' Asylum, RE: monoblock input resistor value (0.00)
Posted by Lew on 2021-01-16, 12:34:20 (71.163.180.70)
Just based on the model designations you provided, it seems that the use of the potentiometer at the input came later than the use of the single value resistance (50E vs 50D). Have you used the 50E am .......

38: Tube DIY Asylum, RE: How high? (0.00)
Posted by Lew on 2021-01-16, 12:18:56 (71.163.180.70)
Thanks for that bit about not reforming a cap with high ESR. Sadly, that is the state of most of my ELNA Cerafines. Yet I cannot bear to throw them away; maybe I am hoping for a resurrection. I do own .......

39: Tube DIY Asylum, How high? (0.00)
Posted by Lew on 2021-01-15, 09:26:56 (71.163.180.70)
How for over spec would the capacitor have to be for you to conclude it is not salvageable? Or would it be prudent to try to re-form it and then re-check ESR? If at that point ESR is still high, perha .......

40: Vinyl Asylum, Where are you setting the temperature control? (0.00)
Posted by Lew on 2021-01-15, 08:50:15 (71.163.180.70)
My Haake came with a default to 750 degrees, and that's where I found it works very well, with lead-containing solder only. So far, I have been able to avoid lead-free solder. Before purchasing the Ha .......

41: Vinyl Asylum, RE: going to upgrade some caps, maybe some advice needed (0.00)
Posted by Lew on 2021-01-14, 08:58:55 (71.163.180.70)
I second what John wrote about a soldering station. Those devices maintain a constant controlled temperature. From what you say about difficulty in removing old solder, I am guessing you're using a we .......

42: OTL Asylum, Thanks. (0.00)
Posted by Lew on 2021-01-12, 10:03:33 (71.163.180.70)
It's been more than 25 years since I owned a Futterman type amplifier, so my memory of the circuit has faded. Good point. .......

43: Vinyl Asylum, All I saw was in German (which I cannot read), and... (0.00)
Posted by Lew on 2021-01-11, 14:20:10 (71.163.180.70)
what made me think it is coreless is the discus-like or flying-saucer-like shape which is characteristic of all coreless turntable motors I have seen, starting from the original Dual coreless motor, o .......

44: Vinyl Asylum, The shape suggests it is a coreless motor,... (0.00)
Posted by Lew on 2021-01-11, 12:02:05 (71.163.180.70)
which should be fantastic. .......

45: Vinyl Asylum, RE: Probably the Chesterfields and (0.00)
Posted by Lew on 2021-01-06, 15:18:24 (71.163.180.70)
For whatever reason, his voice did deteriorate in the last 10-15 years of his singing career, coincident with the return of his heavy NJ accent to his singing voice. Not that there's anything wrong wi .......

46: Vinyl Asylum, RE: Probably the Chesterfields and (0.00)
Posted by Lew on 2021-01-06, 09:27:48 (71.163.180.70)
Sure, vocal cords (or rather the whole structure that produces voice) age no matter what you do or don't do to damage them or it, but trained singers who exercise their voices daily can keep going and .......

47: Vinyl Asylum, Thanks. (0.00)
Posted by Lew on 2021-01-05, 13:07:10 (71.163.180.70)
That's the one. It always interests me that very early in his career, Sinatra completely eradicated his New Jersey accent. It's totally undetectable in this recording and in all his work up until the .......

48: Vinyl Asylum, RE: So I found this Sinatra album that I didn't even know I had... (0.00)
Posted by Lew on 2021-01-05, 09:08:00 (71.163.180.70)
As you probably know, the Sinatra station on Sirius XM does feature many other singers as well, but at least 50% of air time is devoted to FS. I wish they would play more hard core jazz singers, when .......

49: Vinyl Asylum, What I found... (0.00)
Posted by Lew on 2021-01-04, 19:16:01 (71.163.180.70)
The album I was thinking of must be "Where are you". Which does include "There's no you" and was orchestrated by Gordon Jenkins. I cannot find the Axel Stordahl album. I've got jazz vocals stashed at .......

50: Vinyl Asylum, RE: So I found this Sinatra album that I didn't even know I had... (0.00)
Posted by Lew on 2021-01-04, 18:57:01 (71.163.180.70)
He also is said to have said out loud to himself on one occasion during a recording session, at a point where he was unhappy with his performance, "Drink, drink, drink. Smoke, smoke, smoke. Shmuck, sh .......

51: Vinyl Asylum, "Wee small hours", the Sinatra album (0.00)
Posted by Lew on 2021-01-04, 18:52:31 (71.163.180.70)
Was 1955 or 56 and was originally in mono. There are stereo versions, probably derived from the mono, not originally in stereo. Johnny Mathis is the only one who recorded the verse to the song, "Wee s .......

52: Vinyl Asylum, That's it! (0.00)
Posted by Lew on 2021-01-04, 18:45:16 (71.163.180.70)
"Where are you" is the title of the album I was thinking of. However, I could be wrong about the orchestration; is it Stordahl? Certainly could be Gordon Jenkins. .......

53: Vinyl Asylum, I'll go find the LP in question... (0.00)
Posted by Lew on 2021-01-04, 18:43:29 (71.163.180.70)
Obviously my memory was faulty. .......

54: Vinyl Asylum, There is almost no standard that Sinatra did not record... (0.00)
Posted by Lew on 2021-01-04, 10:47:35 (71.163.180.70)
I dabble in jazz singing and have always been a Sinatra fan, but in the course of studying many dozens of songs based on my interest in singing them, I used to think that this or that song was not one .......

55: Vinyl Asylum, What's Abby Normal about it? (0.00)
Posted by Lew on 2021-01-03, 09:41:03 (71.163.180.70)
To me it looks like a very early SOTA, perhaps the kit version which my friend bought and assembled. Funny story: he connected the feedback circuit so it apparently gave positive rather than negative .......

56: Vinyl Asylum, RE: Last spins of 2020... (0.00)
Posted by Lew on 2021-01-01, 10:30:33 (71.163.180.70)
Was listening last night to Oscar Peterson/Milt Jackson, "Very Tall", and then to some Red Garland. What a lyrical and innovative pianist was Garland! Especially with standards. .......

57: Vinyl Asylum, Thorens TD125 with Rabco SL8 (0.00)
Posted by Lew on 2021-01-01, 10:28:46 (71.163.180.70)
For a year or two, that was "the cat's meow" in upper end audio. .......

58: OTL Asylum, RE: There are always solutions. (0.00)
Posted by Lew on 2020-12-25, 09:56:39 (71.163.180.70)
I don't think the output coupling capacitors required by the Futterman type design need to be high-voltage types, so you are probably OK in that regard. But upstream from the output the NYAL amplifier .......

59: Tube DIY Asylum, RE: His aggressive and dismissive on-line persona... (0.00)
Posted by Lew on 2020-12-24, 08:01:34 (71.163.180.70)
One amplifier done. Now doing the same to second amplifier. Fingers crossed. .......

60: OTL Asylum, RE: There are always solutions. (0.00)
Posted by Lew on 2020-12-23, 20:11:31 (71.163.180.70)
What's scary to me is that many of the Japanese companies that for a while made the best available high voltage electrolytics (Panasonic and Nichicon) have ceased or are in the process of cutting back .......

61: Tube DIY Asylum, Not a bad person... (0.00)
Posted by Lew on 2020-12-23, 20:03:41 (71.163.180.70)
After we figured out that we both had been devotee's of KLH 9 ESLs, back in the 70s, he sent me an old photo of him driving a late 50s Porsche Speedster, top down, with a pair of KLH9s perilously stic .......

62: Vinyl Asylum, RE: Can I Use A Y Splitter On My Phono Pre (0.00)
Posted by Lew on 2020-12-22, 09:54:42 (71.163.180.70)
If you can look inside the chassis's of your amplifiers, you should see a resistor connecting the hot input to ground. Or look for it at the grid (if tubes) or gate (if SS) of the first active device. .......

63: Vinyl Asylum, Everything he designed,... (0.00)
Posted by Lew on 2020-12-22, 08:32:44 (71.163.180.70)
whether it was a preamp, phono stage, turntable, or other, was a solid effort, always high quality, always something to reckon with at its price point. He and his work will be missed. .......

64: Vinyl Asylum, RE: In my opinion, you're correct... (0.00)
Posted by Lew on 2020-12-21, 12:38:43 (71.163.180.70)
I start out with zero anti-skate and listen to music. Usually, there will be obvious distortion in the R channel. Then I gradually add AS, a tiny amount at a time, until that distortion disappears. : .......

65: Tweakers' Asylum, Why the facetious tone? (0.00)
Posted by Lew on 2020-12-20, 14:04:23 (71.163.180.70)
As a matter of fact, I have had isodamp inside my preamp for probably 25 years. I used the word "probably" because I haven't spent a lot of time comparing it to other options. .......

66: Vinyl Asylum, RE: In my opinion, you're correct... (0.00)
Posted by Lew on 2020-12-20, 14:02:07 (71.163.180.70)
Far be it from me to argue with Ledermann and Schroeder, two guys whom I admire, but perhaps the reason that a grooveless LP "works" is because it puts you in the ballpark. And for AS, all you can hop .......

67: Tweakers' Asylum, Just be careful... (0.00)
Posted by Lew on 2020-12-20, 08:54:07 (71.163.180.70)
not to impede cooling. I would not encase a transformer in isodamp, for example. I'm sure this is obvious. I do believe in damping the interior of a chassis in spots that don't adversely affect ventil .......

68: Vinyl Asylum, What John said,... (0.00)
Posted by Lew on 2020-12-20, 07:49:16 (71.163.180.70)
Moreover, there is no term for velocity in the equation for friction. .......

69: Vinyl Asylum, I totally agree, but... (0.00)
Posted by Lew on 2020-12-20, 07:46:30 (71.163.180.70)
as you proved for yourself, the magnitude of the net skating force is constantly changing, so there is no way to have perfect anti-skate across the surface of the LP. But "some" AS is definitely neede .......

70: Vinyl Asylum, In my opinion, you're correct... (0.00)
Posted by Lew on 2020-12-19, 12:59:21 (71.163.180.70)
The skating force is due to the friction created between stylus tip and the groove. As such, it is not only a product of diamond sliding on vinyl but also of the contact patch between stylus and groov .......

71: Vinyl Asylum, "...stylus can't really read the groove correctly(?)" (0.00)
Posted by Lew on 2020-12-18, 11:36:07 (71.163.180.70)
I guess I know what you mean, but underhung tonearms are not per se low-fi, in my opinion. With no headshell offset, you still could benefit from anti-skate, if such a device was present, because ther .......

72: Vinyl Asylum, Slate with a hardwood base worked very well... (0.00)
Posted by Lew on 2020-12-16, 14:52:48 (71.163.180.70)
for me, for a plinth I built for Technics SP10 Mk3. .......

73: Tube DIY Asylum, What Alex M said, plus... (0.00)
Posted by Lew on 2020-12-08, 11:12:12 (71.163.180.70)
from a purist point of view, having the signal traverse two 47uF capacitors does not appeal to me, even though the first 47uF cap appears necessitated by the LCR circuit, maybe a case where the cure i .......

74: Vinyl Asylum, RE: It matters, but.... (0.00)
Posted by Lew on 2020-12-08, 10:19:07 (71.163.180.70)
So maybe he didn't market his 3-phase design, even in all SS mode. Kudos to you since you apparently have the knowledge and skill to convert yours to 3-phase operation. .......

75: Tube DIY Asylum, RE: The circuit (0.00)
Posted by Lew on 2020-12-06, 07:40:03 (71.163.180.70)
Are those really 47uF coupling capacitors, one before the LCR circuit and one at the output? I guess the marginal voltage rating (160V rating while seeing ~165V) is deliberate but would put me off a b .......

76: Vinyl Asylum, RE: VPI Classic 4 new motor (0.00)
Posted by Lew on 2020-12-06, 07:25:31 (71.163.180.70)
Could that aluminum shelf be partly the problem in transmitting motor noise to the tonearm and hence to the speakers? .......

77: Vinyl Asylum, It matters, but.... (0.00)
Posted by Lew on 2020-12-06, 07:23:26 (71.163.180.70)
none of the rest of us, who don't already own one, is ever going to be able to buy a Mark Kelly controller. He is out of the business, so the used market is one's only hope. I am sure his product woul .......

78: Vinyl Asylum, RE: What about this low mass tonearm? (0.00)
Posted by Lew on 2020-12-05, 08:43:21 (71.163.180.70)
In the list of specifications it says something about an air bearing. Where is the air bearing? It looks like it might be a Uni pivot, but nothing is said about the bearing type apart from that commen .......

79: Vinyl Asylum, Don't retire! (0.00)
Posted by Lew on 2020-12-04, 15:49:52 (71.163.180.70)
Or at least postpone until the pandemic has died away. There is not much to do in the present world except work. .......

80: Vinyl Asylum, In addition to what the other guys asked about,... (0.00)
Posted by Lew on 2020-12-02, 14:21:58 (71.163.180.70)
you leave the impression that your turntable was way out of wack in terms of its "levelness", if correcting the problem resulted in such an effect on both imaging and "pops and crackles". Was that the .......

81: Vinyl Asylum, Effective Length (0.00)
Posted by Lew on 2020-11-25, 07:57:29 (71.163.180.70)
Isn't that equal to the pivot to spindle distance PLUS the stylus overhang? In other words, effective length = pivot to stylus, not pivot to spindle. .......

82: Vinyl Asylum, RE: Just being facetious (0.00)
Posted by Lew on 2020-11-20, 10:43:53 (71.163.180.70)
Compared to other megabuck turntables, the Dohmann is a relative bargain, if you consider the built-in Minus K isolation platform, and probably one of the best performing. I think it's well under $50K .......

83: Vinyl Asylum, Fair enough... (0.00)
Posted by Lew on 2020-11-18, 09:38:07 (71.163.180.70)
No reason to blame a guy for his misspent youth. KOB got me through more than one failed romance while I was in college. .......

84: Vinyl Asylum, I do the same, but most people don't.... (0.00)
Posted by Lew on 2020-11-17, 16:41:17 (71.163.180.70)
And I have never had an issue with hum in phono except once when I damaged the cartridge internally by yanking on one of the pins. .......

85: Vinyl Asylum, Cartridges don't hum intrinsically,.. (0.00)
Posted by Lew on 2020-11-17, 14:31:14 (71.163.180.70)
unless internally there is a broken connection on the side of the coil that should connect to audio ground. In that case, you hear a very loud hum. Otherwise, it's always something downstream and usua .......

86: Vinyl Asylum, And this is someone you still call "friend"? (0.00)
Posted by Lew on 2020-11-17, 09:21:03 (71.163.180.70)
nt .......

87: Vinyl Asylum, Hemostats for solder jobs... (0.00)
Posted by Lew on 2020-11-14, 10:59:13 (71.163.180.70)
Couldn't live without them. I have two or three different size hemostats that are in use when I am building stuff. Nice work, per the photo. .......

88: Vinyl Asylum, Evidently you've never smoked a roach.... (0.00)
Posted by Lew on 2020-11-13, 08:58:02 (71.163.180.70)
For that, hemostats are indispensible, but I find them to be too brutal for dealing with delicate headshell wires and cartridge pins. It's too easy to over-squeeze and do damage. Some decades ago, I l .......

89: Tweakers' Asylum, RE: Replacement fuse (0.00)
Posted by Lew on 2020-11-11, 14:33:45 (71.163.180.70)
Most likely, yes. If the OEM Busman is slow-blo, make sure the HFT fuse is also slow-blo. .......

90: Vinyl Asylum, RE: Tangential question (0.00)
Posted by Lew on 2020-11-10, 17:21:04 (71.163.180.70)
I can think of a few reasons why inductance and voltage output are not linearly related when you compare two different types of transducer, but I don't know which reason is actually applicable. In any .......

91: Vinyl Asylum, RE: Tangential question (0.00)
Posted by Lew on 2020-11-10, 13:14:04 (71.163.180.70)
That is due to the fundamental difference between a moving iron and a moving coil cartridge. Moving coils just tend to have that much less inductance, for good or ill. .......

92: Vinyl Asylum, Mushroom soup asked for an explanation of pivot to spindle distance,... (0.00)
Posted by Lew on 2020-11-09, 14:39:56 (71.163.180.70)
and why anyone should care about it. I tried to explain its role in setting up a tonearm. Whether perfect geometry is important, or not, is a completely different question. Plus, I am not sure what yo .......

93: Vinyl Asylum, RE: Splain me stylus to pivot distance and so what anyway? (0.00)
Posted by Lew on 2020-11-07, 09:32:18 (71.163.180.70)
I'll take a shot at your question, in the belief that I even know what is your question. The pivot to spindle distance is but one data point that does make a critical difference if you want to achieve .......

94: Vinyl Asylum, RE: Too much information (0.00)
Posted by Lew on 2020-11-07, 07:20:09 (71.163.180.70)
The second determinant of depth of field is magnification, as I am sure you know. You can see that any time you use a telephoto lens on a camera. The higher the magnification and the wider the lens op .......

95: Vinyl Asylum, Sorry... (0.00)
Posted by Lew on 2020-11-06, 22:22:45 (71.163.180.70)
PAR, I certainly meant no insult to SME or any of its products by my little joke with Cool Jeeves. To say that British products have a reputation for complexity is not to say that the quality in any p .......

96: Vinyl Asylum, RE: Too much information (0.00)
Posted by Lew on 2020-11-06, 22:10:47 (71.163.180.70)
Dave, I don't know what is the minimum magnification possible using SEM, but if you say that one can visualize the entire stylus profile in one SEM, I'd trust you. I am used to looking for virus parti .......

97: Vinyl Asylum, RE: Too much information (0.00)
Posted by Lew on 2020-11-05, 09:23:06 (71.163.180.70)
So far as I know, it is really no problem to obtain a good image or view of a stylus tip, in order to determine its shape or lack there of. However, it's quite another thing to interpret what you see. .......

98: Vinyl Asylum, Too much information (0.00)
Posted by Lew on 2020-11-05, 08:16:11 (71.163.180.70)
It seems to me that SEM done in any practical way would give too much information, in that you would be too close to the surface of the stylus to be able to make a judgment of its overall contour. Lik .......

99: Vinyl Asylum, RE: You were right, Ed. Thank you. (0.00)
Posted by Lew on 2020-11-05, 08:09:50 (71.163.180.70)
Rule of thumb is that you want the load resistor on the phono preamp side to be about 10 times the value of the internal resistance of the cartridge. Knowing that, you will be able to make these decis .......

100: Tweakers' Asylum, Thanks for the technical info (0.00)
Posted by Lew on 2020-11-03, 07:49:33 (71.163.180.70)
I did wonder whether there might be something special about MDQ, because I've never seen that designation before, for a slow blow type. I've been using the acme ceramic slow blow fuses for years. I th .......

101: Tweakers' Asylum, Acme sell slo-blow ceramic fuses that are silvered at each end and cryo-treated. (0.00)
Posted by Lew on 2020-11-02, 18:50:12 (71.163.180.70)
Quite reasonable in cost, as well. .......

102: Tweakers' Asylum, So true... (0.00)
Posted by Lew on 2020-11-02, 10:59:14 (71.163.180.70)
Pales in comparison to the months I have spent trying to get my Beveridge direct drive amplifiers (both of them) into reliable working condition. It's all I think about. If there was ever an amplifier .......

103: Tweakers' Asylum, Do you equate parts upgrades with tweaking? (0.00)
Posted by Lew on 2020-11-02, 10:56:45 (71.163.180.70)
I think of parts upgrades in a separate category, because you are not adding anything to the basic layout of the piece. To me, a "tweak" is for example where you can get rid of a coupling capacitor en .......

104: Vinyl Asylum, "This is not the easiest arm to work with..." (0.00)
Posted by Lew on 2020-11-02, 08:06:19 (71.163.180.70)
It's British after all. AND you didn't have the benefit of all the oddball tools, which make it so British. But after this you'll be able to work on a Jaguar or MG. Think of it that way. .......

105: Tweakers' Asylum, RE: You missed my write-up of this retrospective 'study' (400 patients)... (0.00)
Posted by Lew on 2020-11-01, 09:25:42 (71.163.180.70)
I apologize if you felt insulted by my critique. There is so much garbage on the Internet about this disease that I sometimes cannot help myself. In this particular case, it is obvious that you meant .......

106: Vinyl Asylum, RE: Thoughts on (0.00)
Posted by Lew on 2020-11-01, 09:10:14 (71.163.180.70)
Now you need to build your own phono cartridge. I knew one guy who did that. .......

107: Tube DIY Asylum, I agree.. (0.00)
Posted by Lew on 2020-11-01, 08:39:14 (71.163.180.70)
Copy that long alphanumeric code into your browser and do a search. That has worked for me in several similar cases. .......

108: Tweakers' Asylum, Quote from one author of the "study" you cited.... (0.00)
Posted by Lew on 2020-10-31, 09:40:48 (71.163.180.70)
"This is a critical finding that needs to be confirmed through a randomized clinical trial," the study's lead author Dr. Jonathan Chow said in a news release. "If our finding is confirmed, it would ma .......

109: Tweakers' Asylum, Thanks, Steve. (0.00)
Posted by Lew on 2020-10-30, 17:52:46 (71.163.180.70)
As an MD infectious disease guy who spent more than 40 years as a virologist running my own lab, I am acutely sensitive to unfounded tips but also aware that I don't know everything. Actually, the use .......

110: Tweakers' Asylum, RE: If "we" did that, then.... (0.00)
Posted by Lew on 2020-10-30, 17:44:54 (71.163.180.70)
If that was sarcasm, it's OK. In fact I probably could not be bothered to experiment with wall plates, let alone with the screws that hold them in place. But I defend your right to do so. And I am not .......

111: Tweakers' Asylum, Where did you get that one? (0.00)
Posted by Lew on 2020-10-30, 13:48:01 (71.163.180.70)
nt .......

112: Tube DIY Asylum, Now that I "got" the joke,... (0.00)
Posted by Lew on 2020-10-30, 13:29:57 (71.163.180.70)
not the best. .......

113: Tweakers' Asylum, If "we" did that, then.... (0.00)
Posted by Lew on 2020-10-30, 12:38:11 (71.163.180.70)
the Tweakers Asylum would become nothing but a list of tweaks. Don't you want some thoughtful feedback on your ideas, not all of which are sure to be pure gold (Jerry!)? If the tweak holds water, it o .......

114: Tube DIY Asylum, Funny thing... (0.00)
Posted by Lew on 2020-10-30, 12:32:56 (71.163.180.70)
I am a doctor myself, although not a shrink. One of our sons has bipolar disorder, and he was briefly treated with lithium at the onset of his illness, age 17. Because of this experience and my medica .......

115: Vinyl Asylum, RE: after talking in great detail (0.00)
Posted by Lew on 2020-10-30, 08:24:13 (71.163.180.70)
What John just demonstrated mathematically is that your Arthur Loesch phono has more than sufficient gain for either of the two cartridges you mentioned. So you can use any line stage you want. You ca .......

116: Tweakers' Asylum, As if... (0.00)
Posted by Lew on 2020-10-27, 08:52:33 (71.163.180.70)
any preventative measures would eliminate listener bias. For Tweaker, do two titanium screws sound better than one titanium screw? .......

117: Vinyl Asylum, Amen to that... (0.00)
Posted by Lew on 2020-10-27, 08:20:51 (71.163.180.70)
Nt .......

118: Vinyl Asylum, One man's opinion... (0.00)
Posted by Lew on 2020-10-26, 12:30:27 (71.163.180.70)
Of course, results will vary depending specifically upon what phono stage one is talking about. Which is to say, in my opinion, not ALL MM phono stage + SUT combinations, even if matched to the cartri .......

119: Vinyl Asylum, Are you hoping for a miracle? (0.00)
Posted by Lew on 2020-10-25, 09:05:40 (71.163.180.70)
If by low output you mean less than 0.5mV, for example, and if by an MM phono stage you mean the stage will have less than 50db phono gain, then it won't sound good. Partly the results also depend upo .......

120: Vinyl Asylum, Isn't the content of this post contrary to the basis for the thread? (0.00)
Posted by Lew on 2020-10-23, 15:34:12 (71.163.180.70)
I thought you wanted suggestions for a high gain phono stage so as to avoid using a SUT or head amp. Sorry if I am confused. .......

121: Vinyl Asylum, RE: The PS Audio Stellar is getting a lot of positive press (0.00)
Posted by Lew on 2020-10-23, 09:16:32 (71.163.180.70)
I think that's a great idea but not many MM phono stages are built to allow for the installation of SUTs in the nice neat way that Pete Millet has done it in your photo. (I assume that those are the i .......

122: Tweakers' Asylum, A lot of work! (0.00)
Posted by Lew on 2020-10-23, 08:10:35 (71.163.180.70)
That's a lot of work. Just changing the transformer alone can be a real headache as a physically bigger trannie may not fit the chassis. Maybe better to sell this LPS and buy one already set up for 20 .......

123: Tweakers' Asylum, One comment... (0.00)
Posted by Lew on 2020-10-23, 08:05:06 (71.163.180.70)
Duster probably knows more about computer power demands than I do. But the device itself determines how much current is drawn from the supply, not the supply. The supply just has to produce the curren .......

124: Vinyl Asylum, +1 (0.00)
Posted by Lew on 2020-10-22, 14:59:29 (71.163.180.70)
The Phoenix system and now the SOTA Eclipse is MUCH better than the VPI SDS. .......

125: Vinyl Asylum, This is not "old jazz"... (0.00)
Posted by Lew on 2020-10-22, 14:57:58 (71.163.180.70)
This is jazz, baby. As it was meant to be. .......

126: Tube DIY Asylum, Yes, I am well aware that the voltage will sag a bit when the variac is feeding the Bev amplifier (0.00)
Posted by Lew on 2020-10-21, 16:12:50 (71.163.180.70)
But I felt that uncertainty was preferable to risking my life and/or my Fluke meter, trying to measure AC inside the chassis; it's quite cramped near the power transformer. Anyway, this is not the mai .......

127: Tweakers' Asylum, RE: help modding LPS to get different output voltage (0.00)
Posted by Lew on 2020-10-21, 14:32:19 (71.163.180.70)
My thought is that you are looking at a regulated supply. Voltage regulators require a certain amount of headroom over the regulated voltage output, in order to maintain regulation. So I think your pa .......

128: Tube DIY Asylum, RE: Yikes! I would not trust those markings! (0.00)
Posted by Lew on 2020-10-21, 14:07:55 (71.163.180.70)
Please re-read my last post. I determined the voltage coming out of the variac using my fluke meter. I did not use a built-in meter on the variac, because my variac does not have such a built-in meter .......

129: Vinyl Asylum, Mark Kelly is now in the business of making and selling wooden bicycle frames (0.00)
Posted by Lew on 2020-10-21, 09:56:06 (71.163.180.70)
Very beautiful, based on photos, and very expensive. .......

130: Tube DIY Asylum, RE: Variac (0.00)
Posted by Lew on 2020-10-21, 08:00:01 (71.163.180.70)
The adjustment knob on my Variac has markings for output voltage at different settings. Of course, those are not going to be perfectly accurate, depending upon input voltage from the wall. So I identi .......

131: OTL Asylum, RE: When that thing was built (0.00)
Posted by Lew on 2020-10-20, 14:32:02 (107.77.202.136)
On my workbench I am using a variac, at a set point which I measured at 115 V. At 115 V I am not seeing the full 3200 V at the output. More like about 3100-3150 V. Still, a few caps are near their upp .......

132: Tube DIY Asylum, Variac (0.00)
Posted by Lew on 2020-10-20, 14:25:49 (107.77.202.136)
On my workbench the amplifier is running off a variac which I once upon a time set for 115V. But there is still that variability in wall voltage due to time of day, as you say. .......

133: Tube DIY Asylum, Question about electrolytic capacitor voltage ratings (0.00)
Posted by Lew on 2020-10-20, 11:36:28 (71.163.180.70)
In repairing the power supplies in my Beveridge direct-drive amplifiers, I am replacing the electrolytic capacitors. The filter uses eight (8) 47uF/450V capacitors in series with shunt resistors to pr .......

134: OTL Asylum, Question about capacitor ratings for the cognoscenti (0.00)
Posted by Lew on 2020-10-20, 11:31:50 (71.163.180.70)
In repairing these power supplies, I am replacing the electrolytic capacitors. As noted elsewhere, the filter uses eight (8) 47uF/450V capacitors in series with shunt resistors to promote current shar .......

135: Tweakers' Asylum, RE: Lumber yard cable lifters bring improvements in sound. (0.00)
Posted by Lew on 2020-10-19, 09:28:25 (71.163.180.70)
Without arguing whether cable lifters are audible or not, can you say how the carpet "absorbs sound" while the signal is still in electrical form traveling in a conductor? I've wondered about the rati .......

136: Vinyl Asylum, RE: Generally I agree that many aftermarket mats are mere smoke and mirrors. (0.00)
Posted by Lew on 2020-10-19, 08:49:38 (71.163.180.70)
I own a Herbie's but don't use it because I subsequently found that I prefer the Boston Audio Mat2. However, your experience supports my own impression that different mats affect the SQ differntly, on .......

137: OTL Asylum, carbon composition shunt resistors (0.00)
Posted by Lew on 2020-10-18, 09:07:58 (71.163.180.70)
I already mentioned this to 6bq5 via private email, but I thank him for pointing me to check the CC shunt resistors in the "good" amplifier. What I found when first I paid attention to the DC voltage .......

138: Vinyl Asylum, RE: if you were getting a Chinook in the mail soon . . . . (0.00)
Posted by Lew on 2020-10-18, 08:41:22 (71.163.180.70)
Personally, I am no big fan of the Denon 103 or its variants, but I certainly agree it's a candidate, if that is what you like. I don't know how the Chinook allows for load adjustment, but the Steelhe .......

139: Vinyl Asylum, RE: Foolish.. platter mats (0.00)
Posted by Lew on 2020-10-17, 16:19:57 (71.163.180.70)
I wouldn't argue with the notion that audio land is riddled with BS claims, but in my experience with 8-10 different turntables over the same 50 years that you have owned your Thorens, turntable mats .......

140: Vinyl Asylum, RE: if you were getting a Chinook in the mail soon . . . . (0.00)
Posted by Lew on 2020-10-17, 13:40:36 (71.163.180.70)
You are about to receive a preamplifier/phono stage that is highly flexible. So I would choose any cartridge that suits my desires in a cartridge. The beauty of your situation is that you have practic .......

141: Vinyl Asylum, Different mats for different platters (0.00)
Posted by Lew on 2020-10-16, 08:36:36 (71.163.180.70)
I have found that what works best on one turntable does not necessarily work best on every other turntable I own. My two favorite mats are the Boston audio Mat2 and a vintage SAECSS 300 metal mat. I h .......

142: Vinyl Asylum, RE: I got that same response. (0.00)
Posted by Lew on 2020-10-16, 08:27:11 (71.163.180.70)
The calculation of a resonant frequency would have to be done using the lateral compliance of the art9 along with the lateral effective mass of the tonearm. This is an interesting question, also becau .......

143: Vinyl Asylum, What a bunch of nice guys and good sports.... (0.00)
Posted by Lew on 2020-10-15, 15:08:07 (71.163.180.70)
we have on Vinyl Asylum. Truly the nicest group. .......

144: OTL Asylum, RE: 470K resistors (0.00)
Posted by Lew on 2020-10-15, 09:18:55 (71.163.180.70)
Well, the CC resistors as shunts mounted on the bottom side of the PCB did not cause as much noise as did the metal films mounted in the same position, but the noise was further reduced when I moved t .......

145: OTL Asylum, RE: I think I fixed the problem with my Beveridge OTL DD amplifier (0.00)
Posted by Lew on 2020-10-14, 16:22:01 (71.163.180.70)
I am almost afraid to have reported success, since the real proof of the pudding comes when I re-attach the amplifier to its speaker. I may have reported earlier that I built a dummy speaker load to u .......

146: OTL Asylum, We should talk.... (0.00)
Posted by Lew on 2020-10-14, 16:16:04 (71.163.180.70)
although I have always thought of you as a knowledgable guy, I didn't realize until now that your hands on experience with these amplifiers was in the presence of RAM and with access to his ideas and .......

147: Vinyl Asylum, RE: No, you won't be disappointed... (0.00)
Posted by Lew on 2020-10-13, 18:20:49 (71.163.180.70)
I don't think the 9XA is widely owned yet; it only recently came on the market. You might luck out in finding someone here who owns or has owned both the 7 and the 9XA, but so far not. If you do find .......

148: Vinyl Asylum, RE: No, you won't be disappointed... (0.00)
Posted by Lew on 2020-10-13, 15:47:44 (71.163.180.70)
I am like John, I also never heard the 9XA, and I would not venture a guess as to how it sounds compared to the 7. Typically, this sort of hairsplitting question needs to be resolved by the person who .......

149: Vinyl Asylum, RE: Aqvox input impedance (0.00)
Posted by Lew on 2020-10-13, 12:05:31 (71.163.180.70)
I had a long talk with Dave Slagle on this question of impedance matching between cartridge and inputs of a current-drive phono. I hope he will comment, but it seems that if there is enough excess gai .......

150: OTL Asylum, I think I fixed the problem with my Beveridge OTL DD amplifier (0.00)
Posted by Lew on 2020-10-13, 11:50:29 (71.163.180.70)
Without detailing the process, it basically boils down to you cannot "tweak" this amplifier. It is marginally stable when configured exactly as original, and only then. But the mate to this amplifier, .......

151: Vinyl Asylum, No, you won't be disappointed... (0.00)
Posted by Lew on 2020-10-13, 10:09:16 (71.163.180.70)
It's a great cartridge. Be patient during break-in. It takes at least a while to smooth out and flesh out. .......

152: Vinyl Asylum, Aqvox input impedance (0.00)
Posted by Lew on 2020-10-13, 10:06:10 (71.163.180.70)
I don't know the input impedance of the newest AT LOMCs, but the ART7, I think, is 12 ohms. Using a 12-ohm source to drive a 10-ohm input impedance will inevitably result in some loss of the preciousl .......

153: Vinyl Asylum, Interesting question (0.00)
Posted by Lew on 2020-10-12, 10:57:32 (71.163.180.70)
I hadn't considered that factor, but we do know that the DC resistance of all that wiring is usually much less than that of the cartridge itself. And I don't know how much the inductance of the wiring .......

154: Vinyl Asylum, RE: The new AT ART9Xi specs.... (0.00)
Posted by Lew on 2020-10-12, 08:18:30 (71.163.180.70)
I think John probably understands coil inductance better than I do, but for purposes of using a "current-driven" phono stage, the current output of a cartridge can be estimated by the simple equation: .......

155: Vinyl Asylum, RE: opinions please (0.00)
Posted by Lew on 2020-10-11, 12:21:56 (71.163.180.70)
In fact, in my experience, the ART9 cost a bit more than ART7 before both went out of production. The ART9 has a much higher voltage output than an ART7 and so is compatible with more different phono .......

156: Vinyl Asylum, RE: Audio Technica ART 9 cartridge (0.00)
Posted by Lew on 2020-10-11, 12:18:57 (71.163.180.70)
Rule of thumb: If the vertical compliance is 10 or lower (at a frequency = 10Hz), then you are dealing with a low compliance cartridge. ART9 compliance is higher than 10 and so could be thought of as .......

157: Vinyl Asylum, RE: Can someone in simple terms explain? (0.00)
Posted by Lew on 2020-10-11, 08:40:11 (71.163.180.70)
As a class, MC cartridges tend to be low in compliance with some rare exceptions. So you almost can't go wrong, especially if you check the specs and see a number for compliance that is 10 or less. Bu .......

158: OTL Asylum, Thanks for the correction,,,, (0.00)
Posted by Lew on 2020-10-10, 13:58:03 (71.163.180.70)
Perhaps I faded out before completely comprehending Broskie's thought on this subject. As an OTL devotee, I want to understand it, so I will search it out and re-read it. .......

159: Vinyl Asylum, RE: That's just nonsense. (0.00)
Posted by Lew on 2020-10-07, 08:31:09 (71.163.180.70)
Low output ZYX is .24mV, not .14mV. Unless they've made some changes in latest models. .......

160: Vinyl Asylum, Roulette (0.00)
Posted by Lew on 2020-10-04, 07:14:07 (71.163.180.70)
I used to find that many Roulette issues were plagued with sibilance. Sadly, it ruined several of Sarah Vaughn's best musical efforts, or at least dampened my enjoyment. These days, I subconsciously a .......

161: Vinyl Asylum, I wouldn't say sibilance is a necessary evil with vinyl (0.00)
Posted by Lew on 2020-10-02, 16:25:03 (71.163.180.70)
I have five turntables up and running at any given moment, feeding two different systems with two different phono stages, in two very different rooms. I rotate 8-10 cartridges among these turntables, .......

162: Vinyl Asylum, Do Rega tt's run fast, as I've read here and elsewhere? (0.00)
Posted by Lew on 2020-10-01, 08:25:28 (71.163.180.70)
Hence the "lively" sound quality? Perhaps their latest models with motor control can be adjusted for proper speed. .......

163: Vinyl Asylum, +1 on Grace Ruby re-tip (0.00)
Posted by Lew on 2020-10-01, 08:15:24 (71.163.180.70)
Have Soundsmith do a re-tip with one of their two line contact types. You'll be happy for well under $500. Everything sounds better when you go from the elliptical stylus to the line contact stylus. : .......

164: Vinyl Asylum, RE: I briefly used that Grado shim with my TLZ. PITA and heard zeo benefit. nt (0.00)
Posted by Lew on 2020-09-30, 12:35:11 (71.163.180.70)
So I was correct; it came with my TLZ, which was and is a great cartridge, by the way. Three out of 3 of us never used the stand-off. .......

165: Vinyl Asylum, RE: Is the review on line? (0.00)
Posted by Lew on 2020-09-30, 07:39:34 (71.163.180.70)
Shure used to publish stuff like that all the time to promote their cartridges, particularly the V15. That goes back to the 70s, at least. The question naturally arises, in whose opinion? Who was on t .......

166: Vinyl Asylum, RE: Wasn't there a 3-point shim, to be installed between cartridge and headshell? (0.00)
Posted by Lew on 2020-09-30, 07:31:08 (71.163.180.70)
Same here. Ironically, or sensibly, most headshells are constructed so as to achieve a broad and firm contact with the top surface of the cartridge. As if that were a good design idea. And for MC cart .......

167: Vinyl Asylum, Wasn't there a 3-point shim, to be installed between cartridge and headshell? (0.00)
Posted by Lew on 2020-09-29, 20:58:29 (71.163.180.70)
If memory serves, the hard plastic shim with 3 conical standoffs on one side was supplied with a cartridge that I bought new some few decades ago. Maybe a Grado TLZ(?) I think I tried to install it an .......

168: Vinyl Asylum, What are you using for main speakers? (0.00)
Posted by Lew on 2020-09-17, 20:14:33 (71.163.180.70)
I agree with John that vinyl reproduction can give you very satisfying and realistic deep bass response, but do you necessarily need subwoofers to make you happy? On the other hand, if you are mainly .......

169: Vinyl Asylum, RE: servo control and "quartz locked" are two different things (0.00)
Posted by Lew on 2020-09-17, 16:19:09 (71.163.180.70)
Well, I guess we can all agree that .005% or 5 parts in 100,000 in wow and flutter is likely to be inaudible, so if the two turntables sound different, it's for another reason, but it could still be a .......

170: Vinyl Asylum, RE: servo control and "quartz locked" are two different things (0.00)
Posted by Lew on 2020-09-16, 10:22:45 (71.163.180.70)
The meaning of the seemingly trivial .005% depends upon how you define "speed stability", assuming your data are correct. (Where did you find that?). It seems to me that .005%, in terms of any concept .......

171: Tube DIY Asylum, Yes, but very good sounding nonetheless (0.00)
Posted by Lew on 2020-09-14, 15:56:56 (71.163.180.70)
One of the few metallized film types I can put up with when space is limited. Or just plain whenever. Also like Dynamicaps, even though I am biased in favor of film and foil. .......

172: Tube DIY Asylum, Tried Russian teflons (0.00)
Posted by Lew on 2020-09-14, 15:53:41 (71.163.180.70)
No cigar for me. I much prefer domestic teflon capacitors. You just have to suck it up and pay the price. To my ears, the SSGs are THE most transparent capacitor, ever. I'd be surprised if the KSGs ar .......

173: Vinyl Asylum, servo control and "quartz locked" are two different things (0.00)
Posted by Lew on 2020-09-14, 15:46:38 (71.163.180.70)
It's probable that both versions use a servo mechanism to maintain constant platter speed, but in one of the two versions the action of the servo is governed by the constant frequency oscillation of a .......

174: Tube DIY Asylum, Are KSGs as transparent as SSGs? (0.00)
Posted by Lew on 2020-09-12, 14:32:58 (108.28.89.19)
Largest value for SSG is .013uF, so far as I know (and I own a few and they are very large). I've never tried a KSG. .......

175: Tweakers' Asylum, RE: fo.q tape (0.00)
Posted by Lew on 2020-09-11, 10:45:54 (108.28.89.19)
Many electrolytics have pressure relief vents built into their caps. Could it be a bad thing to cover them with tape? I'm thinking out loud, not necessarily questioning the practice. The potential ven .......

176: Vinyl Asylum, "Kiseki Black" = Koetsu Black? (0.00)
Posted by Lew on 2020-09-11, 10:40:01 (108.28.89.19)
I assume you made a typo, but it induced me to wondering about the new KPH. As I understood it, the original Kiseki Purple Heart was made by Sugano who eventually changed his company name to Koetsu. S .......

177: Tweakers' Asylum, RE: An ordinary commercial fuse is almost always UL approved... (0.00)
Posted by Lew on 2020-09-09, 09:36:53 (108.28.89.19)
I would say the term "western values" is ironic rather than oxymoronic, but I take your point. Western values includes good and evil practices and beliefs. .......

178: Vinyl Asylum, Read the spec sheet for your phono stage again... (0.00)
Posted by Lew on 2020-09-07, 19:10:24 (108.28.89.19)
Does it really say "max" input is 4mV? Or does it say 4mV is recommended? Because for one thing, a cartridge rated for 4mV output will typically deliver much more than 4mV on peaks and at certain freq .......

179: Vinyl Asylum, RE: Spinning...Return to Forever...Where have I known you before (0.00)
Posted by Lew on 2020-09-05, 10:25:26 (108.28.89.19)
To me, it's always about Chick Corea. .......

180: Tweakers' Asylum, Agree completely,.. (0.00)
Posted by Lew on 2020-09-03, 09:34:47 (108.28.89.19)
but I don't think the Brits had much of a choice. One of my friends likes to point out, not necessarily in defense of the Chinese but just for the irony, that in 99 years of British control, there was .......

181: Tweakers' Asylum, Beryllium? (0.00)
Posted by Lew on 2020-09-03, 09:30:00 (108.28.89.19)
I was surprised to learn that things sold to the public still have significant beryllium content. Haven't I read somewhere in audio land, and more than once, that beryllium was a great material for ma .......

182: Tweakers' Asylum, No point.... (0.00)
Posted by Lew on 2020-09-03, 09:16:33 (108.28.89.19)
Just thinking out loud, I guess. No offense intended. .......

183: Tweakers' Asylum, RE: Affordable solid brass faceplate (0.00)
Posted by Lew on 2020-09-02, 09:48:49 (108.28.89.19)
What I know I know is that my post would get the response it got. I shouldn't knock it if I haven't tried it. Actually, I wasn't knocking it; I was expressing surprise and skepticism. For decorative r .......

184: Vinyl Asylum, RE: "buy yourself a set of forceps" (0.00)
Posted by Lew on 2020-08-31, 09:53:28 (108.28.89.19)
I use an eyebrow tweezer borrowed from my wife so long ago that she's forgotten all about. .......

185: Vinyl Asylum, The need for "system matching"... (0.00)
Posted by Lew on 2020-08-28, 13:19:27 (108.28.89.19)
For me, that is a catch phrase meaning that the reviewer had some reservations about the sound of the item he was reviewing, but for is own private reasons he didn't want to be specific. By itself, th .......

186: Tweakers' Asylum, RE: Affordable solid brass faceplate (0.00)
Posted by Lew on 2020-08-21, 09:08:24 (108.28.89.19)
I certainly wouldn't argue that faceplates on equipment could color the sound, one way or another, but faceplates on wall sockets? Especially if metal they should never even touch the actual socket. I .......

187: Tweakers' Asylum, RE: An ordinary commercial fuse is almost always UL approved... (0.00)
Posted by Lew on 2020-08-21, 09:05:09 (108.28.89.19)
FWIW, Among the Taiwanese I have known and still know, there is a split between those who consider themselves "natives" and those who, or whose families, emigrated from China probably since WW2 with C .......

188: Tweakers' Asylum, RE: I'm a fuse skeptic (0.00)
Posted by Lew on 2020-08-15, 10:37:58 (108.28.89.19)
The opportunity to do that is long gone. The system and the attenuator were not mine, and now my friend who owned that system has sold it lock, stock, and barrel. In order to downsize. .......

189: Tweakers' Asylum, RE: An ordinary commercial fuse is almost always UL approved... (0.00)
Posted by Lew on 2020-08-15, 10:35:19 (108.28.89.19)
I for one am fully aware that Taiwan is a remarkable first world nation, even though China doesn't think so. I cannot imagine who in the West would think otherwise. .......

190: Tweakers' Asylum, An ordinary commercial fuse is almost always UL approved... (0.00)
Posted by Lew on 2020-08-14, 11:57:31 (108.28.89.19)
which is an assumption one makes in buying them at your local hardware store. I just wonder/wondered what "CE" stands for as an acronym. Could it be "Consumer Electronics"? Just guessing. Or could it .......

191: OTL Asylum, Jon Broskie says they are the same (0.00)
Posted by Lew on 2020-08-14, 11:54:37 (108.28.89.19)
If you read Tubecad, Broskie, who doesn't shy away from making provocative generalizations, says the circlotron and the Futterman output stages are fundamentally the same. I personally cannot see how .......

192: Tweakers' Asylum, RE: Certified fuses... (0.00)
Posted by Lew on 2020-08-12, 08:44:34 (108.28.89.19)
What is CE approval, and how does it compare to approval by the UL.? Thanks, if you know. .......

193: Vinyl Asylum, Effective mass of 30g... (0.00)
Posted by Lew on 2020-08-09, 10:18:58 (108.28.89.19)
Must include the FR headshell that came with the tonearm. In a weak attempt to play by the rules, I usually use a lightweight headshell, CF works well, with relatively high compliance cartridges. I do .......

194: Vinyl Asylum, FR64S (0.00)
Posted by Lew on 2020-08-09, 08:54:09 (108.28.89.19)
I have one, which I use with the B60 base, a necessary accessory in my opinion to get the best out of it. I have to agree there is something special about these tonearms. Even mismatching high complia .......

195: Vinyl Asylum, Stylus friction as a cause of static charge on LPs (0.00)
Posted by Lew on 2020-08-07, 18:51:58 (108.28.89.19)
The advertising blurb on the website posits that friction of the stylus tip in the groove is one cause of static charge build-up. The idea seems plausible to me, so I don't dismiss it out of hand. But .......

196: Tube DIY Asylum, Thanks, guys! (0.00)
Posted by Lew on 2020-08-06, 08:24:59 (108.28.89.19)
What I have actually done is to construct a dummy load for a Beveridge direct-drive amplifier that mimics a Beveridge speaker panel. I measured the speaker, and it is purely capacitative, with 3nF bet .......

197: Tweakers' Asylum, RE: I'm a fuse skeptic (0.00)
Posted by Lew on 2020-08-05, 12:03:12 (108.28.89.19)
Even to find that one fuse sounds any different from another would be interesting, and in fact, I had that experience, but I am still not quite willing to believe my ears. There were 4 other audiophil .......

198: Tweakers' Asylum, RE: synergistic orange fuse (0.00)
Posted by Lew on 2020-08-05, 08:30:20 (108.28.89.19)
After at least a month or so of listening to the SR Orange, did you try going back to your previous fuse for a second listen? .......

199: Tweakers' Asylum, Yes, I had forgotten that exchange, but... (0.00)
Posted by Lew on 2020-08-05, 08:26:07 (108.28.89.19)
I fail to see how there is a conflict between what I wrote above, to the effect that audiophilia and logic are sometimes not good partners, and the bit about Ralph's idea on fuses. In any case, I foll .......

200: Tweakers' Asylum, RE: Be sure to try the fuse both ways (0.00)
Posted by Lew on 2020-08-04, 17:35:25 (108.28.89.19)
You've made the error of applying logic to audio. .......

201: Tube DIY Asylum, I think you're right. (0.00)
Posted by Lew on 2020-07-31, 10:16:06 (108.28.89.19)
It just occurred to me, after posting. It's actually very easy to see which lead connects to the outer foil on these capacitors, and the red line is on the end that seems to go to the inner foil. But .......

202: Vinyl Asylum, Hilarious! (0.00)
Posted by Lew on 2020-07-31, 09:44:37 (108.28.89.19)
nt .......

203: Tube DIY Asylum, Polarity of "mylar" capacitor? (0.00)
Posted by Lew on 2020-07-31, 09:42:55 (108.28.89.19)
I recently purchased the 3nF/4kV capacitor shown in this eBay ad. It is said to be mylar and to have been made in Japan by Kyocera. Since it is supposed to be mylar and therefore nonpolarized, I wonde .......

204: Vinyl Asylum, RE: BOTTLENECK? (0.00)
Posted by Lew on 2020-07-30, 09:29:22 (108.28.89.19)
Have you or did you check on the internal resistance of the Sound Smith MI type cartridges? Perhaps they have a high-ish internal resistance which could be a problem if you interpose a SUT between the .......

205: Tube DIY Asylum, RE: Sorry Folks (0.00)
Posted by Lew on 2020-07-29, 09:39:02 (108.28.89.19)
And yet, CJ stuff never made MY toes tap. Which goes to show ya.... something. .......

206: Vinyl Asylum, RE: Moving Iron not Moving Magnet (0.00)
Posted by Lew on 2020-07-27, 12:09:34 (108.28.89.19)
I wouldn't know why LP Gear doesn't mention it but maybe because its employees themselves have not read the factory specs or because they don't care. All I know is that Grado has been making very good .......

207: Vinyl Asylum, Soundsmith replaces the styli on their MI cartridges.... (0.00)
Posted by Lew on 2020-07-27, 10:05:00 (108.28.89.19)
for a very reasonable cost, unlike the cost of replacing the stylus on an expensive LOMC type. It's just that you cannot do it yourself at home. I own a Stanton 981LZS, which is of course MM, not MI, .......

208: Vinyl Asylum, Moving Iron not Moving Magnet (0.00)
Posted by Lew on 2020-07-27, 10:01:39 (108.28.89.19)
If it matters, the Grados are MI, not MM. (I don't offhand know the internal resistance of the Grado low output MIs, either, but it may not be as low as that of the Pickering/Stanton LOMMs, which woul .......

209: Tweakers' Asylum, That's quite a leap,... (0.00)
Posted by Lew on 2020-07-25, 08:07:28 (108.28.89.19)
from hypothesis to solution in one fell swoop. Have you done any experiments to confirm or deny your RFI idea? .......

210: Vinyl Asylum, +2 (0.00)
Posted by Lew on 2020-07-25, 08:04:32 (108.28.89.19)
nt .......

211: Vinyl Asylum, I've got two Grace Ruby cartridges... (0.00)
Posted by Lew on 2020-07-20, 12:34:12 (74.96.187.240)
One is still original, and the other I had retipped by SS using their top line OCL stylus. At first and for a few months after the re-tip, I would have said I slightly favored the OEM version, but aft .......

212: Vinyl Asylum, "Blue Velvet" , also in "Mulholland Drive" (0.00)
Posted by Lew on 2020-07-20, 12:30:44 (74.96.187.240)
The scenes in the theater where the female singer does "Crying", in Spanish "Llorando", are absolutely spell-binding. David Lynch used it to foreshadow later events; the two female protagonists are in .......

213: Vinyl Asylum, Interesting observation,... (0.00)
Posted by Lew on 2020-07-20, 12:22:15 (74.96.187.240)
and no, I hadn't noticed the structure of In Dreams. But isn't the classic structure of popular songs: verse-chorus-chorus-bridge-chorus, where the last 4 segments are also known as "AABA"? Other freq .......

214: Vinyl Asylum, Love Roy! (0.00)
Posted by Lew on 2020-07-20, 10:21:06 (74.96.187.240)
I often sing his songs at Karaoke in Tokyo, to our son's profound embarrassment. But his Japanese friends love it. Elvis's favorite singer. .......

215: Tube DIY Asylum, G-strings... (0.00)
Posted by Lew on 2020-07-17, 11:43:00 (74.96.187.240)
I'm in DC area too. Paul Bollenbach, is he still running that show? Great show. .......

216: Vinyl Asylum, RE: +1 (0.00)
Posted by Lew on 2020-07-09, 13:26:03 (74.96.187.240)
One other reason I don't push my finding is that the "problem" may be worse for the DV tonearms than for any others, just because of separating vertical from horizontal. Each of the bearings in a DV t .......

217: Vinyl Asylum, RE: +1 (0.00)
Posted by Lew on 2020-07-08, 10:14:25 (74.96.187.240)
This was with a Dynavector DV505 tonearm, which as you know separates the vertical bearing from the horizontal bearing. The DV505 seems to have been designed for Stevenson or something like it. When I .......

218: Vinyl Asylum, +1 (0.00)
Posted by Lew on 2020-07-07, 09:20:11 (74.96.187.240)
I empirically discovered that what you say has merit many years ago, and I try to abide by the rule that the long axis of the cartridge body should be set parallel to that of the headshell. ::: TOPIC: .......

219: Vinyl Asylum, RE: Fidelity Research FR64S (0.00)
Posted by Lew on 2020-07-03, 08:15:25 (74.96.187.240)
My guess is you will be happy. Most who have used FR head shells With FR tonearms seem to prefer substituting a head shell made by some other company. In my case I am extremely happy with the 18 g Ort .......

220: Vinyl Asylum, RE: Fidelity Research FR64S (0.00)
Posted by Lew on 2020-06-30, 10:48:17 (74.96.187.240)
My bad. And I really don't know why it is that a number of long-time fans of the FR64S do prefer 231.5mm for P2S instead of the FR-recommended distance of 230mm. Can you imagine why? I am a late-comer .......

221: OTL Asylum, RE: In the standard set-up there are no cables. (0.00)
Posted by Lew on 2020-06-30, 08:02:56 (74.96.187.240)
I appreciate your input greatly. .......

222: Vinyl Asylum, RE: Fidelity Research FR64S (0.00)
Posted by Lew on 2020-06-28, 09:07:51 (74.96.187.240)
The manual will say 230 mm for pivot to spindle distance, but many who use this tonearm prefer 231.5 mm pivot to spindle distance. At that distance it is easier to set it up for Baerwald alignment. Al .......

223: OTL Asylum, RE: In the standard set-up there are no cables. (0.00)
Posted by Lew on 2020-06-27, 10:03:03 (74.96.187.240)
Yes, I am sure that COULD be done, but I wouldn't want to do it except in the case where I am trouble-shooting. Otherwise, I find it nice and neat and safer to have the Beveridge amplifiers serve as t .......

224: Tube DIY Asylum, Bad socket then? (0.00)
Posted by Lew on 2020-06-26, 08:12:35 (74.96.187.240)
Nt .......

225: OTL Asylum, In the standard set-up there are no cables. (0.00)
Posted by Lew on 2020-06-24, 10:32:24 (74.96.187.240)
The amp connects directly to the speaker via HV banana plugs. The stators receive +/-3200V. Can you imagine a "safe" cable for that? I've got 20kVDC wire, but not enough of it. I remember seeing a pho .......

226: Vinyl Asylum, RE: That's my plan (0.00)
Posted by Lew on 2020-06-24, 10:22:43 (74.96.187.240)
It's almost a cliche' to say this, but any time you replace something that you've been listening to for a long time with something that's new to you, there will be differences for sure. We are program .......

227: Vinyl Asylum, RE: A Stellar new phono stage (0.00)
Posted by Lew on 2020-06-23, 08:54:52 (74.96.187.240)
Listen to the new preamp every day for two weeks, and then switch back to the 834. And then come back and tell us what you think. .......

228: Tube DIY Asylum, Are you listening to the Christian McBride show? (0.00)
Posted by Lew on 2020-06-21, 09:57:24 (74.96.187.240)
I get it on Real Jazz via SiriusXM. Was listening to a CD last night, Chick Corea with Christian McBride and a drummer. Some of the greatest jazz musicians alive. .......

229: Vinyl Asylum, RE: Possible. (0.00)
Posted by Lew on 2020-06-20, 19:33:08 (74.96.187.240)
I injured my neck playing rugby in college. It was just one play lasting a few seconds, but I have had issues with my neck going into spasm and radicular pain my entire life since that moment. I've ha .......

230: OTL Asylum, That's a problem... (keeping an eye on the amp) (0.00)
Posted by Lew on 2020-06-20, 19:30:06 (74.96.187.240)
When installed, the amplifier is the the base upon which a 6-foot speaker cabinet rests. You can't see the tubes or anything else that is going on. You have to go on funny noises, either from the spea .......

231: Vinyl Asylum, RE: Bad week. (0.00)
Posted by Lew on 2020-06-19, 08:39:50 (71.163.180.237)
More likely a referred pain from an old cervical spine injury or arthritic changes affecting the openings in the cervical spine that give off nerve roots. I guess that pathology could be summed up as .......

232: OTL Asylum, RE: Premature judgement (0.00)
Posted by Lew on 2020-06-18, 14:11:19 (71.163.180.237)
I measured the speakers when all this started. From stators to screen the resistance is infinite. There is 1.5nF of capacitance from one stator across to the other, and as one would expect, there is a .......

233: OTL Asylum, RE: Premature judgement (0.00)
Posted by Lew on 2020-06-18, 13:42:36 (71.163.180.237)
Noise went down when I moved the 1K resistors AND the ferrite beads back to where they were when this saga started. For what it's worth, now that the levels are lower, I can trace the noise to the top .......

234: Tweakers' Asylum, What Duster said. (0.00)
Posted by Lew on 2020-06-18, 08:51:04 (71.163.180.237)
By the way, I first tried small cans of sauer kraut, same size cans as the mandarin orange slices. Could be my imagination, but it didn't work as well. In a classical case of making the preconceived t .......

235: OTL Asylum, Premature judgement (0.00)
Posted by Lew on 2020-06-18, 08:47:27 (71.163.180.237)
So, when I reported a 90% improvement, I hadn't yet moved all of the current sharing resistors to the safe side of the PCB. Three out of 8 were still on the sensitive side of the board. I finished the .......

236: Vinyl Asylum, RE: Periphery ring (0.00)
Posted by Lew on 2020-06-18, 08:34:36 (71.163.180.237)
It's impossible to answer your question about motor stress without knowing (1) the weight of that ring, and (2) the turntable on which you intend to use it. There's also bearing stress to consider. As .......

237: OTL Asylum, RE: Did any of your changes and repairs sort it out? nt (0.00)
Posted by Lew on 2020-06-17, 08:42:31 (71.163.180.237)
I think yes. In the course of making repairs after the fuse blew for the second time, which event also took out some of the filter capacitors and some of the current sharing resistors in the power sup .......

238: OTL Asylum, Corona, maybe? (0.00)
Posted by Lew on 2020-06-14, 11:13:09 (71.163.180.237)
There may be a static charge on an edg-y construct. Might indicate an iffy solder joint or tracing. Do the hairs on your arm stand up, or seem to do so? If you darken the room, can you see a bluish gl .......

239: Tweakers' Asylum, That's where the orange slices come into play (0.00)
Posted by Lew on 2020-06-14, 07:37:38 (71.163.180.237)
They create randomness of the energy dissipation inside the can, and the water heats up to dissipate the energy. This pseudo-scientific explanation is just as valid as any that come with fancy expensi .......

240: Tweakers' Asylum, Small cans of DelMonte Mandarin Orange slices in water (0.00)
Posted by Lew on 2020-06-12, 18:05:28 (71.163.180.237)
That's what I use under a very heavy turntable (about 60 lbs in a slate plinth). There's actually a valid rationale for it, and I like to think it works, which is as good as if it actually works. The .......

241: OTL Asylum, Done. (0.00)
Posted by Lew on 2020-06-11, 13:53:32 (71.163.180.237)
We'll see what that does. The bodies of the 1K resistors are now within an inch of the grids. Not "close enough" normally, but close for any Beveridge amplifier I've seen. .......

242: OTL Asylum, The Beveridge amps are so fussy as is.... (0.00)
Posted by Lew on 2020-06-11, 07:23:37 (71.163.180.237)
that I have stuck to every single element of the original schematic, which I was lucky to have obtained from Roger Modjeski a couple of years ago. There are no modifications, except new parts and bett .......

243: Vinyl Asylum, RE: Very funny that they didn't steal the ugly AR. I lived in a quonset (0.00)
Posted by Lew on 2020-06-11, 07:03:51 (71.163.180.237)
Good choice of car for Alaska, the good old VW bug, and a quonset hut. Great photo. .......

244: Vinyl Asylum, RE: Design of original AR-XA evaluated (0.00)
Posted by Lew on 2020-06-11, 07:00:58 (71.163.180.237)
The way I remember it, the price was not the point. It really was the first turntable to be designed for the home audiophile from the ground up to play one LP at a time and with a thought toward energ .......

245: Vinyl Asylum, RE: Design of original AR-XA evaluated (0.00)
Posted by Lew on 2020-06-10, 10:09:56 (71.163.180.237)
I bought one in 1970-71, too. The price was under $100, which even then was dirt cheap, and it offered "performance" that seemed good at the time, because there were no generally accepted criteria for .......

246: OTL Asylum, 36V filaments for 36KD6 (0.00)
Posted by Lew on 2020-06-10, 09:26:50 (71.163.180.237)
Otherwise, I guess they are in the same family. 6LF6s are far more expensive and rare, however, as you may know. .......

247: OTL Asylum, RE: Oscillation (0.00)
Posted by Lew on 2020-06-09, 16:52:06 (71.163.180.237)
I don't disagree with you about not changing the grid resistors, at least not yet, as I also responded to Ralph below. Here is some more info that I communicated to Ralph privately: "I found that one .......

248: OTL Asylum, RE: 36KD6 (0.00)
Posted by Lew on 2020-06-09, 16:20:54 (71.163.180.237)
If I have to go down that road, I will have to obtain some proper type resistors. I will do that just in case. I'd rather not deviate from the values shown on the schematic, unless I have to. (This m .......

249: OTL Asylum, 36KD6 (0.00)
Posted by Lew on 2020-06-08, 16:42:40 (71.163.180.237)
nt .......

250: OTL Asylum, RE: Oscillation (0.00)
Posted by Lew on 2020-06-08, 11:54:30 (71.163.180.237)
I replaced all 4 of the power tubes, not just one, because I had no way to know which one of the 4 was arcing. Furthermore, the tubes I replaced were "old", in terms of use. This amp appears to use so .......

251: Tube DIY Asylum, RE: Williamson revisited (0.00)
Posted by Lew on 2020-06-06, 18:06:54 (71.163.180.237)
I built a pair of those using 807s and Acrosound TO-300 output transformers. A very sweet sounding amplifier. I think the 807 is a forgotten gem. .......

252: OTL Asylum, Oscillation (0.00)
Posted by Lew on 2020-06-06, 18:01:05 (71.163.180.237)
Hi Ralph, I just sent you a private email. I fired up the amp on my benchtop with no input and no load. Using my Fluke 87 meter, I detect an AC voltage on the banana jack that feeds the mylar diaphrag .......

253: OTL Asylum, RE: Thanks and a further thought.. (0.00)
Posted by Lew on 2020-06-05, 13:19:38 (71.163.180.237)
The amps do not oscillate when in proper operating condition, but they are always a threat to oscillate, because you have a low voltage solid-state front end feeding a very high voltage tube output st .......

254: OTL Asylum, Thanks and a further thought.. (0.00)
Posted by Lew on 2020-06-05, 08:04:38 (71.163.180.237)
Thanks, Ralph. Is that probe specifically and only for "Keysight" oscilloscopes, as the data sheet suggests? I currently own a Hitachi, a Sencore, and a Tektronix. I just bought the Tektronix, and I w .......

255: OTL Asylum, Some SACD players.... (0.00)
Posted by Lew on 2020-06-04, 12:58:14 (71.163.180.237)
like my Ayre C5Xe-mp, do not use a low pass filter at the output so as to eliminate a noise that is inherent to CD or SACD, which is at around 250kHz. Perhaps yours is another one of such players. Wit .......

256: OTL Asylum, Can't (0.00)
Posted by Lew on 2020-06-04, 11:21:01 (71.163.180.237)
As you know, there are 3200V lurking at the outputs of this amplifier. Consequently, when I have it on my benchtop, I am running it unloaded. It exhibits no abnormalities in that mode. DC voltages are .......

257: OTL Asylum, Completely different problem now (0.00)
Posted by Lew on 2020-06-04, 08:27:19 (71.163.180.237)
With all new caps, resistors, and output tubes, I now have a new problem: When I re-attached the amps to the speakers, and with no input signal, after turn-on I now hear about 20 seconds of silence, t .......

258: OTL Asylum, RE: 6LU8s, anyone? (0.00)
Posted by Lew on 2020-06-03, 08:50:00 (71.163.180.237)
So sorry for the delay in responding to your emails. I will send you an estimated cost of shipping today. Then we can get the show on the road. .......

259: OTL Asylum, RE: OT question? (0.00)
Posted by Lew on 2020-06-02, 18:47:50 (71.163.180.237)
I will let you know in the next few days. I have replaced all the power supply filter caps and the current equalizing resistors used in the power supply, most of which were toast. I have also replaced .......

260: Tweakers' Asylum, RE: I can only guess (0.00)
Posted by Lew on 2020-06-01, 07:34:30 (71.163.180.237)
Thx for your response. .......

261: OTL Asylum, RE: 6LU8s, anyone? (0.00)
Posted by Lew on 2020-05-31, 07:43:52 (71.163.180.237)
I sent or tried to send an email to you yesterday using your information on this forum. Did you receive the email? Meanwhile, you could do the same. I believe my email address is available if you clic .......

262: OTL Asylum, RE: 6LU8s, anyone? (0.00)
Posted by Lew on 2020-05-27, 13:52:24 (71.163.180.237)
What details? They are all RCA. They are all NOS. There are at least 4. It is indeed sad that Roger Modjeski is no longer around, more for his sake than for ours. But re-tubing should not require his .......

263: OTL Asylum, RE: 6LU8s, anyone? (0.00)
Posted by Lew on 2020-05-26, 08:55:45 (71.163.180.237)
I have had no interest in my 6LU8 vacuum tubes. I have several, they are all brand new, the brand is RCA. I will leave this post here. If anyone, especially those who use Futterman amplifiers, sees th .......

264: OTL Asylum, RE: Ralph, What about my 7241s? (0.00)
Posted by Lew on 2020-05-25, 07:29:21 (71.163.180.237)
I have no dog in the fight for filament conditioning. You asked a question and I tried to respond based on my own poor understanding. This is the sort of topic where even EEs might disagree. ::: TOPIC .......

265: OTL Asylum, RE: Ralph, What about my 7241s? (0.00)
Posted by Lew on 2020-05-24, 09:06:32 (71.163.180.237)
Well actually, the goal is to condition the filaments before you apply B+ from plate to cathode. So while you are applying B+, the filaments are having to do their job of producing electrons, and ther .......

266: OTL Asylum, RE: 6LU8s, anyone? (0.00)
Posted by Lew on 2020-05-24, 07:46:01 (71.163.180.237)
I sold all my 6LF6s years ago, to Jim McShane I think. .......

267: OTL Asylum, Ralph, What about my 7241s? (0.00)
Posted by Lew on 2020-05-23, 18:36:04 (71.163.180.237)
I just re-tubed one monoblock with all new 7241s. Do you recommend for whole days for pre-conditioning the filaments of that tube type. I did it for 6 hours or so and then was impatient to hear music. .......

268: OTL Asylum, 6LU8s, anyone? (0.00)
Posted by Lew on 2020-05-23, 10:14:24 (71.163.180.237)
Are any of you Futterman-iacs interested in a gaggle of 6LU8s? They are free for the cost of shipping to a genuine user. .......

269: Tweakers' Asylum, similar problem here (0.00)
Posted by Lew on 2020-05-20, 09:41:07 (71.163.180.237)
I have the same issue. In my basement system, the left channel amplifier and speaker are about 16 feet away from my preamplifier, which sits on top of a cabinet to the right of my listening position. .......

270: Tweakers' Asylum, How high? (0.00)
Posted by Lew on 2020-05-18, 11:00:13 (71.163.180.237)
Maybe I have not had a cable lifter epiphany because the cheap solutions I have tried do not raise the cables high enough away from the floor. Have you ever read anything to suggest how high the cable .......

271: Vinyl Asylum, RE: Cartridge loading with a potentiometer (0.00)
Posted by Lew on 2020-05-18, 10:17:04 (71.163.180.237)
If memory serves me, the B&O MMC series of MI cartridges have inductance around 50mH. I'm sure there is some variability in inductance from one product to another but probably less than an order of ma .......

272: Tweakers' Asylum, RE: Cable lifters/elevators - part 2 (0.00)
Posted by Lew on 2020-05-17, 16:16:48 (71.163.180.237)
Your idea and Dave's idea are both very good ones. But I don't hear any difference in either of my two systems, with vs without cable lifters. The main system is fully balanced front to back, and the .......

273: Vinyl Asylum, I found this definition of induced magnet on the internet (0.00)
Posted by Lew on 2020-05-14, 20:09:08 (71.163.180.237)
"Induced magnet cartridges (IM) are derived from MC cartridges. ... Their magnetic circuit consists of a thin soft iron rod that moves inside the air gap of a magnetic circuit polarised by a permanent .......

274: Vinyl Asylum, RE: Is the induced magnet a moving iron cartridge maybe? (0.00)
Posted by Lew on 2020-05-14, 15:39:48 (71.163.180.237)
Every time I look up the difference between induced magnet and moving iron, I forget the difference in about a week. That is if there is even any difference at all. .......

275: Vinyl Asylum, Is it really tilted to the right for azimuth? (0.00)
Posted by Lew on 2020-05-14, 08:42:31 (71.163.180.237)
Or is that just an optical illusion? .......

276: Vinyl Asylum, RE: I have the 312STR, so I wonder how they differ. Vinylengine (0.00)
Posted by Lew on 2020-05-14, 08:38:02 (71.163.180.237)
I happen to have a copy of a brochure describing the entire Acutex product line ca 1980. First, there were two series. The earlier series (probably mid to late 1970s) have the outward appearance simil .......

277: Vinyl Asylum, RE: AT ART 1000 nt (0.00)
Posted by Lew on 2020-05-13, 15:10:48 (71.163.180.237)
You can't tell us you are listening to THAT cartridge and not also say what you think about it. .......

278: Vinyl Asylum, Great cartridge! (0.00)
Posted by Lew on 2020-05-13, 15:09:53 (71.163.180.237)
One of my all time favorites even including expensive LOMCs. .......

279: Vinyl Asylum, Oops! (0.00)
Posted by Lew on 2020-05-13, 08:19:08 (71.163.180.237)
Forgot about ZYX Universe on tonearm #5. .......

280: Vinyl Asylum, ART7, Urushi, Grace Ruby, Ortofon MC2000 (0.00)
Posted by Lew on 2020-05-13, 07:14:18 (71.163.180.237)
in use on one of 4 tonearms. .......

281: Tube DIY Asylum, I do appreciate the advice,... (0.00)
Posted by Lew on 2020-05-12, 16:17:05 (71.163.180.237)
but bear in mind that I have owned the gear for several years, and in the first one or two of those years, the amplifiers were resurrected from front to back. No selenium rectifiers any longer, for ex .......

282: Tube DIY Asylum, I'm somewhat encouraged that the panels are OK (0.00)
Posted by Lew on 2020-05-12, 12:33:21 (71.163.180.237)
Capacitance from one stator to the other is 1.67nF. Between one stator and the screen I read 3.05 nF. Between the other stator and the screen, I read 2.95 nF. I think that roughly coincides with your .......

283: Tube DIY Asylum, AJ, thanks for the useful information (0.00)
Posted by Lew on 2020-05-12, 07:53:09 (71.163.180.237)
The sequence of events is (1) fuse blows in the midst of listening to music, shortly after start-up. (2) I separate amp and speaker and test the amplifier on the benchtop with no load (after removing .......

284: Tube DIY Asylum, RE: Sad to say there is something else going on. (0.00)
Posted by Lew on 2020-05-11, 10:18:29 (71.163.180.237)
I do appreciate any and all advice. I certainly thought about swapping the amplifiers to ascertain where the problem lies, but right now I am leery of damaging the second amplifier, if the first one i .......

285: Tube DIY Asylum, Sad to say there is something else going on. (0.00)
Posted by Lew on 2020-05-10, 10:38:54 (71.163.180.237)
I re-installed the amplifier, and when connected to the speaker, the amplifier blew its fuse once again. This brings me to the point of having to consider there is a problem with one or more of the sp .......

286: Tube DIY Asylum, RE: Can a spider web do this? (0.00)
Posted by Lew on 2020-05-10, 08:24:18 (71.163.180.237)
The fuse that was blowing is the fuse on the AC line going into the amplifier. The speakers, unlike your model 3s or any other conventional ESL speaker, are not energized unless the amp is up and runn .......

287: Vinyl Asylum, RE: Anita O'Day... (0.00)
Posted by Lew on 2020-05-09, 08:40:15 (71.163.180.237)
My LP collection is seriously deficient when it comes to Anita ODay. At best, I think I have three of her albums. I am well aware that I need more, but they are hard to come by, and when one does see .......

288: Tube DIY Asylum, You've got one too. (0.00)
Posted by Lew on 2020-05-08, 15:01:09 (71.163.180.237)
The web spanned that space which is traversed by those 4 resistors, from the low voltage PCB to the HV PCB. I've been in and out of these amps many times to repair one glitch or another, and I have ne .......

289: Tube DIY Asylum, Can a spider web do this? (0.00)
Posted by Lew on 2020-05-08, 14:43:53 (71.163.180.237)
Yesterday, while I was listening to music, the fuse blew in one of my Beveridge 2SW amplifiers. These are direct-drive amplifiers with a solid state input and driver stage that runs on about 70V and a .......

290: Vinyl Asylum, I love all those artists, including Anita O'Day... (0.00)
Posted by Lew on 2020-05-08, 09:06:51 (71.163.180.237)
She gets far too little credit these days for being a top rank jazz singer, but in several forays into various Good Will emporia, I have never yet found a play-able LP; their stock is usually dirty, s .......

291: Vinyl Asylum, Anti-Cables (0.00)
Posted by Lew on 2020-05-08, 09:02:46 (71.163.180.237)
Located in Minnesota, will make what you want, and you can choose the price based on the wire they use (copper, silver, etc). Very nice people. I have known Paul Speltz (a real life EE) for perhaps 20 .......

292: Vinyl Asylum, +1 (0.00)
Posted by Lew on 2020-05-03, 09:18:34 (71.163.180.237)
nt .......

293: Vinyl Asylum, RE: Solid State Phono Pre- Don't turn the power off! (0.00)
Posted by Lew on 2020-05-03, 08:30:53 (71.163.180.237)
I have one solid state preamplifier and several tube types. I also discovered by trial and error that my solid-state unit sounds far better if left on all the time. However, it also gets very warm if .......

294: Vinyl Asylum, As a pointy-headed intellectual,... (0.00)
Posted by Lew on 2020-05-01, 09:00:07 (71.163.180.237)
I'd say sell it and donate, the proceeds to a good cause, but I shudder to think who would buy it. Keep it, but in a dark closet, as a piece of Americana is another option. Maybe anAmerican history mu .......

295: Vinyl Asylum, Terrific LP. (0.00)
Posted by Lew on 2020-04-29, 16:36:39 (71.163.180.237)
I own two copies. Maybe because I often forget what I already own, when shopping for used LPs. But I don't regret it. .......

296: Vinyl Asylum, Sorry (0.00)
Posted by Lew on 2020-04-29, 11:15:40 (71.163.180.237)
I didn't mean to be casting aspersions on your suggestion re 82K. I also have found that many MMs sound best at around 100K ohms. (I've never tried any value between 47K and 100K.). What I was after i .......

297: Vinyl Asylum, I am out of ideas... (0.00)
Posted by Lew on 2020-04-29, 07:49:11 (71.163.180.237)
With those components and that much gain and a 47K load, you should not be straining. Something is amiss, or there is another bit of data missing. As a last gasp, check the specs on your amplifier for .......

298: Vinyl Asylum, Phono load resistor value? (0.00)
Posted by Lew on 2020-04-28, 16:47:34 (71.163.180.237)
Is it 47K, which is standard, or something else? .......

299: Vinyl Asylum, What is the input load resistance of your phono stage? (0.00)
Posted by Lew on 2020-04-28, 14:15:29 (71.163.180.237)
Thanks. .......

300: Vinyl Asylum, RE: Is Pass Aleph Ono still good? (0.00)
Posted by Lew on 2020-04-28, 14:14:35 (71.163.180.237)
On the surface, your finding doesn't make much sense, but without knowing what amplifier and speakers you are using, and what is the input sensitivity of the amplifier and the stated efficiency of the .......

301: Vinyl Asylum, Not sure 60db would be so bad... (0.00)
Posted by Lew on 2020-04-27, 11:43:24 (71.163.180.237)
After all, he does have a volume control and presumably it is not all the way open when he uses his other cartridge at the 46db gain setting. So he would just attenuate a bit more. 56db would be bette .......

302: Vinyl Asylum, RE: Users of LO MMs/MIs - such as Grado "Statement' series, Pickering XLS4500S or Stanton 785LZE ... (0.00)
Posted by Lew on 2020-04-27, 11:38:28 (71.163.180.237)
In my opinion, the relatively high compliance of these cartridges has a lot to do with their superb SQ. .......

303: Tweakers' Asylum, Yes... (0.00)
Posted by Lew on 2020-04-26, 17:41:47 (71.163.180.237)
As soon as I posted my remark, I realized why there is probably a lot less stress on the grid, in areas where there is commerce and industry, compared to good old normalcy. .......

304: Vinyl Asylum, I'm just saying... (0.00)
Posted by Lew on 2020-04-26, 11:01:09 (71.163.180.237)
that both Pickering and Stanton (which in some ways seem to have been the same company) marketed "Low Output Moving Magnet" cartridges, where the output was less than 0.5mV. Besides the two models I n .......

305: Vinyl Asylum, Andy is correct.... (0.00)
Posted by Lew on 2020-04-26, 09:07:28 (71.163.180.237)
Pickering, Stanton, and Grado all make or made cartridges that could only be categorized as "low output". (None of the Stanton or Pickering models are available any longer; I don't know what's up with .......

306: Tweakers' Asylum, RE: The good news is less electrical lines being used seems to equal better sound... (0.00)
Posted by Lew on 2020-04-25, 22:05:37 (71.163.180.237)
Is it a fact that less electricity is being used these days? I would have thought it might be otherwise, because everyone is home using AC and etc. But perhaps the lack of industry makes all the diffe .......

307: Tweakers' Asylum, Which two numbers to make what ratio? (0.00)
Posted by Lew on 2020-04-24, 15:40:56 (71.163.180.237)
I don't see anything golden there. .......

308: Vinyl Asylum, RE: RF? (0.00)
Posted by Lew on 2020-04-24, 15:33:17 (71.163.180.237)
I'd never say never, but the capacitor to squelch arc-ing across a switch is traditionally placed directly across the switch, from the input side to the output side. If you take a look inside some of .......

309: OTL Asylum, RE: BACK ON THE SHELF SHE GOES (0.00)
Posted by Lew on 2020-04-23, 13:21:27 (71.163.180.237)
Are all of the NYAL guys gone from the scene? Not to mention Atma-sphere amplifiers and Ralph. EDIT. Bruce Rozenblitt is still active, is he not? .......

310: Vinyl Asylum, RF? (0.00)
Posted by Lew on 2020-04-23, 11:56:49 (71.163.180.237)
I didn't mention RF. I don't think this has anything to do with RF. .......

311: Vinyl Asylum, RE: Holy Crap 2! (0.00)
Posted by Lew on 2020-04-23, 11:17:43 (71.163.180.237)
I don't think anything you do to the incoming AC is necessarily going to fix the problem. It's likely happening locally at the off/on switch. As someone else suggested before I did. .......

312: Vinyl Asylum, Yes... (0.00)
Posted by Lew on 2020-04-23, 11:16:10 (71.163.180.237)
You may have to remove the tt chassis from the plinth and then turn it upside down or otherwise remove the base, to access the connections to the switch. That's the hardest part. .01uF ceramic capacit .......

313: Vinyl Asylum, RE: Audible pop from speaker when turning TT on (0.00)
Posted by Lew on 2020-04-23, 07:25:47 (71.163.180.237)
My routine is to turn the volume all the way down or use the MUTE switch, first of all. Then I lift the tonearm. Then I shut down power to the platter. Then I remove the LP and flip it or replace it w .......

314: Vinyl Asylum, RE: Honest, Dave... (0.00)
Posted by Lew on 2020-04-23, 07:20:22 (71.163.180.237)
My problem is I have hundreds of LPs that need to be cleaned, and if I want to listen to any one of them, I have a tendency to play that LP, regardless of its state of cleanliness. Many times, the "di .......

315: Vinyl Asylum, Honest, Dave... (0.00)
Posted by Lew on 2020-04-22, 09:04:02 (71.163.180.237)
One rinse with distilled water, right after cleaning with a detergent-containing solution (meaning before the first solution has had a chance to dry out in the grooves) seems to make a difference as c .......

316: Vinyl Asylum, RE: Germs? (0.00)
Posted by Lew on 2020-04-22, 07:45:06 (71.163.180.237)
I suppose we would if there were music encoded by our pores and equipment to decode it. .......

317: Vinyl Asylum, Germs? (0.00)
Posted by Lew on 2020-04-21, 17:07:39 (71.163.180.237)
This is not about germophobia. As I said above, one wash cycle with water + detergent + isopropanol. Then one rinse with distilled water and you're done. ( Or at least I'm done.) Life is too short to .......

318: Vinyl Asylum, RE: Well it's not BS (0.00)
Posted by Lew on 2020-04-21, 10:39:37 (71.163.180.237)
I use a low concentration of Triton X100 in the cleaning solution with my VPI HW17. After removing the solution with the vacuum wand, I then liberally squirt deionized distilled water over the surface .......

319: Vinyl Asylum, Sela Ward.. (0.00)
Posted by Lew on 2020-04-20, 06:57:27 (71.163.180.237)
In that clip, too. Another very very beautiful woman, who actually has had a successful career in films. .......

320: Vinyl Asylum, Who else? (0.00)
Posted by Lew on 2020-04-20, 06:54:15 (71.163.180.237)
nt .......

321: Tweakers' Asylum, There's something magic about 2", 1.75", and 0.75"? (0.00)
Posted by Lew on 2020-04-18, 10:40:11 (71.163.180.237)
I am guessing that different lengths might broaden the peak of any remaining resonance, but why those specific lengths (and widths)? .......

322: Tube DIY Asylum, Yep (0.00)
Posted by Lew on 2020-04-18, 07:55:52 (71.163.180.237)
That's it. I'd never seen the bottom topology before now. .......

323: Vinyl Asylum, Haha (0.00)
Posted by Lew on 2020-04-18, 07:43:03 (71.163.180.237)
Hadn't thought of that show in years, except for Markie Post. .......

324: Vinyl Asylum, Those were the days... (0.00)
Posted by Lew on 2020-04-17, 15:00:39 (71.163.180.237)
Mulligan and Baker with Konitz and many others defined the West Coast sound that I came to love, once I was old enough to appreciate it, by which time they were melded into the main stream. I went to .......

325: Tube DIY Asylum, I was thinking of placing a resistor to ground,... (0.00)
Posted by Lew on 2020-04-17, 14:03:51 (71.163.180.237)
just as you suggest. I can't recall whether or not Broskie had one, but he must have had one and used 1M. .......

326: Tube DIY Asylum, Good point. (0.00)
Posted by Lew on 2020-04-17, 14:02:05 (71.163.180.237)
Thx. .......

327: Tube DIY Asylum, RE: battery in series with the grid (0.00)
Posted by Lew on 2020-04-17, 11:00:36 (71.163.180.237)
I've used red diodes and Cree Schottky diodes on the cathode (in a phono stage), and it does work great. I was turned onto using Schottkys by Naz. However, in the particular circuit I am now thinking .......

328: Tube DIY Asylum, RE: battery in series with the grid (0.00)
Posted by Lew on 2020-04-17, 10:23:04 (71.163.180.237)
Thanks. If there's a coupling capacitor on the positive terminal and the grid on the negative terminal, why would the battery be damaged? (Pardon my naivete.) .......

329: Tube DIY Asylum, battery in series with the grid (0.00)
Posted by Lew on 2020-04-17, 08:17:36 (71.163.180.237)
I was thinking about battery bias,using a battery to apply negative V to the grid, when an internet search on this subject led me to Tubecad, where John Brosky once proposed putting the battery in ser .......

330: Vinyl Asylum, Thanks for taking the trouble,... (0.00)
Posted by Lew on 2020-04-15, 17:32:25 (71.163.180.237)
but you probably would say, as I say to my wife many times a day these days, "what else have I got to do". I also say that to people who apologize for my having to stand in line to get into a store, l .......

331: Vinyl Asylum, What about a more typical MC? (0.00)
Posted by Lew on 2020-04-15, 07:32:05 (71.163.180.237)
If you don't mind, could you consider an internal resistance of 5 ohms and inductance of 50 uH? More like the typical LOMCs we use. And thanks. .......

332: Vinyl Asylum, RE: Dave, have you heard the ART1000? (0.00)
Posted by Lew on 2020-04-14, 16:24:27 (71.163.180.237)
Like John, I toyed with buying the ART1000, but I waited until we went to Tokyo to hang out with our son, last spring. Unfortunately, the ART1000 costs the equivalent of about $4000, even in Tokyo. So .......

333: Vinyl Asylum, Dave, have you heard the ART1000? (0.00)
Posted by Lew on 2020-04-14, 10:24:47 (71.163.180.237)
The proof of the pudding is in the listening. .......

334: OTL Asylum, Heat shrink (0.00)
Posted by Lew on 2020-04-13, 21:07:23 (71.163.180.237)
Just realized that in many cases, if not most, you can just de-solder, install a piece of heat shrink to cover the exposed joint, then re-solder and use the heat gun. No need to install so many stand- .......

335: OTL Asylum, It'll be a bit of a pain in the butt,... (0.00)
Posted by Lew on 2020-04-13, 20:35:33 (71.163.180.237)
because there are so many loose ends there (32, if I count right), but the peace of mind will be worth it. .......

336: OTL Asylum, In addition to what Ralph said. (0.00)
Posted by Lew on 2020-04-13, 20:04:54 (71.163.180.237)
It looks from the photo as if those resistors on pins 3 and 6 of all 16 different power tube sockets are soldered direct to untethered wires, on the resistor leads opposite to the tube pins. So you ha .......

337: Vinyl Asylum, JVC MC1 (0.00)
Posted by Lew on 2020-04-13, 19:53:30 (71.163.180.237)
I think the JVC MC1 was the first commercially available cartridge built a la the Audio Technica. From what I can find out, it dates back to the very early 80s or earlier. It was described on Audiogon .......

338: Vinyl Asylum, Cool, but.... (0.00)
Posted by Lew on 2020-04-11, 17:49:14 (71.163.180.237)
I would use copper alligator clips if you can find them. They do exist. .......

339: Vinyl Asylum, RE: Sorry to make you repeat the story,... (0.00)
Posted by Lew on 2020-04-11, 17:46:42 (71.163.180.237)
Vibrating devices have their place, but perhaps it is not in the area of stylus cleaning. .......

340: Vinyl Asylum, RE: The microfibers can wrap themselves around the stylus tip. (0.00)
Posted by Lew on 2020-04-11, 11:20:01 (71.163.180.237)
I first read about Magic Eraser on Audiogon Analog Forum. It was highly touted by its adherents. For a few years, I was resistant to the idea, for fear of snagging the stylus tip in the ME fibers, pre .......

341: Vinyl Asylum, Sorry to make you repeat the story,... (0.00)
Posted by Lew on 2020-04-11, 10:07:11 (71.163.180.237)
but in our public and private conversations I never heard it before. So to me it's news. Are you still using Blu-tac? I would have no problem switching over from ME; I have no stock in the company. An .......

342: Vinyl Asylum, What happened with Peter, you, and Magic Eraser? (0.00)
Posted by Lew on 2020-04-10, 21:05:12 (71.163.180.237)
I'm all ears. .......

343: Vinyl Asylum, Magic Eraser (0.00)
Posted by Lew on 2020-04-10, 12:46:15 (71.163.180.237)
Buy it at any supermarket (while wearing gloves and a mask). Costs a few bucks, lasts forever when used to clean styli. A quick up and down and up onto a pad of Magic Eraser and you're done. Works a c .......

344: Tube DIY Asylum, RE: Correct fuse value (0.00)
Posted by Lew on 2020-04-09, 08:55:00 (71.163.180.237)
Do you have an owners manual? If not, you should probably obtain one from VTL or from the Internet. Or, on the issue of fuses you could just take a cue from what chip says. .......

345: Tube DIY Asylum, If your speakers will have 8 ohms or higher nominal impedance... (0.00)
Posted by Lew on 2020-04-08, 11:47:55 (71.163.180.237)
Why not try an OTL? Atma-sphere or Trancendent for two examples. .......

346: Tube DIY Asylum, Yep... (0.00)
Posted by Lew on 2020-04-04, 09:00:37 (71.163.180.237)
I melt it in the oven, too. It gives off a rather unpleasant but probably not toxic odor. Unfortunately, as I recall, I could not fix the step-up; it was blown internally. I still have a tray of solid .......

347: Tube DIY Asylum, RE: Potted power transformer, what material is that? (0.00)
Posted by Lew on 2020-04-03, 20:55:50 (71.163.180.237)
KLH9 electrostatic speaker voltage step-up transformers were potted with what appears to be a kind of wax, maybe beeswax. It melts at something less than 200 degrees F, and you can then literally pour .......

348: Vinyl Asylum, RE: Guys, go over to the LencoHeaven forum... (0.00)
Posted by Lew on 2020-04-03, 20:53:10 (71.163.180.237)
12AX7 has more than a bit of Miller capacitance on its own, because of the very high mu of that tube. So perhaps that is the thinking behind not adding a load capacitance per se. .......

349: Tube DIY Asylum, Electrolytics are most suspect (0.00)
Posted by Lew on 2020-04-03, 08:27:23 (71.163.180.237)
So maybe the negative can you mention should be changed out. Film caps are much less likely to be bad. The advice to compare voltages, R vs L, is your best bet. Compare plate and bias voltages on the .......

350: Tweakers' Asylum, RE: battery ground tweak by unclestu (0.00)
Posted by Lew on 2020-04-01, 13:33:25 (107.77.204.10)
Thanks for your patience in responding. When you put a meter across a battery to measure its DC voltage, the meter constitutes almost no load. Therefore batteries can read as if they are still making .......

351: Vinyl Asylum, Nothing? (0.00)
Posted by Lew on 2020-03-29, 09:00:55 (71.163.180.237)
Nt .......

352: Tube DIY Asylum, Grain alcohol is typically 90% or better. (0.00)
Posted by Lew on 2020-03-28, 14:04:40 (71.163.180.237)
For what it's worth, 70% alcohol is actually superior for killing "germs". .......

353: Tweakers' Asylum, RE: battery ground tweak by unclestu (0.00)
Posted by Lew on 2020-03-27, 17:11:24 (71.163.180.237)
Why would the battery drain any faster than its shelf-life? It's not doing a darn thing. .......

354: Vinyl Asylum, Jared is a very busy guy,... (0.00)
Posted by Lew on 2020-03-27, 17:10:06 (71.163.180.237)
for now. .......

355: Vinyl Asylum, Do you refer to the new SL1000R? (0.00)
Posted by Lew on 2020-03-26, 10:24:32 (71.163.180.237)
In other words the full up replacement version of the SP10 Mk3 with plinth, based instead on he new SP10R? Which would probably cost ~$18000. I'd be interested in a comparison to the Proscenium, which .......

356: Vinyl Asylum, Who needs Amazon as a source for new LPs? (0.00)
Posted by Lew on 2020-03-19, 09:35:52 (71.163.180.237)
I never order anything from them, unless it cannot be avoided. They are never the least expensive and they are never the fastest to deliver. .......

357: Vinyl Asylum, RE: No cartridge? (0.00)
Posted by Lew on 2020-03-19, 08:45:24 (71.163.180.237)
When I saw you use a Schick tonearm, I guessed you used a DL103. Thx. .......

358: Vinyl Asylum, No cartridge? (0.00)
Posted by Lew on 2020-03-18, 08:21:47 (71.163.180.237)
That may be why you are vaguely dissatisfied. .......

359: Vinyl Asylum, I achieved the "happy" state 5 or more years ago,... (0.00)
Posted by Lew on 2020-03-14, 15:46:17 (71.163.180.237)
but I'd rather not list my gear, because then I would have to face the cold hard facts of my level of audio depravity. Anyway, I don't "shop" any more. .......

360: Vinyl Asylum, RE: A little ditty on aging. (0.00)
Posted by Lew on 2020-03-13, 13:51:37 (71.163.180.237)
By age 90, they'll be back for the mini skirts and the bosoms. .......

361: Vinyl Asylum, I'm not upset, if you're not upset. (0.00)
Posted by Lew on 2020-03-11, 13:39:41 (71.163.180.237)
nt .......

362: Vinyl Asylum, Whose post? (0.00)
Posted by Lew on 2020-03-10, 09:33:14 (71.163.180.237)
Yours or the OP's? Because the OP asked which was "better". That word covers a lot of territory beyond speed stability. And why the gratuitous insult? .......

363: Vinyl Asylum, Correct me if I'm wrong, because... (0.00)
Posted by Lew on 2020-03-10, 09:02:32 (71.163.180.237)
I don't really know where the GR model sits in the current "G series" line-up, but at least some of those offer superior damping of the platter and plinth and better materials, compared to the old SL1 .......

364: Vinyl Asylum, It's not only about speed stability (0.00)
Posted by Lew on 2020-03-10, 06:13:52 (71.163.180.237)
The GR is superior on many other levels as well. .......

365: Vinyl Asylum, +1 (0.00)
Posted by Lew on 2020-03-07, 17:58:25 (104.238.232.162)
I did some quick calculations using typical MC and MM signal voltage outputs and typical load resistance values; all results for Power were less than a microwatt. .......

366: Vinyl Asylum, Oh man! (0.00)
Posted by Lew on 2020-03-01, 17:32:20 (104.238.232.162)
The very last thing I want is to get into a debate about turntable drive systems on this forum. I guess I stuck my foot in it, and I apologize. .......

367: Tube DIY Asylum, RE: caps (0.00)
Posted by Lew on 2020-03-01, 08:49:34 (104.238.232.162)
Got it. Have you tried .02 uF? ( I guess the next value in SSG would be .022.) Going from .01 to .0133 would be barely perceptible is my guess. Or maybe you can increase the grid resistance by a hair .......

368: Tube DIY Asylum, RE: caps (0.00)
Posted by Lew on 2020-03-01, 07:42:48 (104.238.232.162)
What value of the Russian SSG are you now using, and what amount of capacitance would you like to try? .......

369: Tube DIY Asylum, RE: caps (0.00)
Posted by Lew on 2020-03-01, 07:39:13 (104.238.232.162)
If you are using a Russian SSG silver Mica capacitor as we discussed earlier, then as far as I am concerned it makes no sense to even think about bypassing the capacitor. First, because the value is s .......

370: Tweakers' Asylum, RE: OK, thanks (0.00)
Posted by Lew on 2020-02-29, 15:12:08 (104.238.232.162)
What about Goldpoint with SMDs? Small and word of mouth is very positive. .......

371: Vinyl Asylum, RE: The best 6922/6DJ8 class tube I've heard is the Matsushita National 7DJ8. (0.00)
Posted by Lew on 2020-02-29, 09:10:58 (104.238.232.162)
I think 7DJ8 would have a 7V filament voltage requirement. Works fine with 6V but that alone will slightly alter SQ. So it'll sound a bit different from typical 6DJ8. .......

372: Vinyl Asylum, RE: Edgar Villchur designed the AR XA (0.00)
Posted by Lew on 2020-02-29, 08:39:14 (104.238.232.162)
It's not a "theory" that in the AR and similar designs, the motor pulley and the platter are allowed to move relative to each other. If that occurs, the speed will vary until the suspension settles do .......

373: Vinyl Asylum, RE: Edgar Villchur designed the AR XA (0.00)
Posted by Lew on 2020-02-28, 12:00:02 (104.238.232.162)
The potential problem with the AR design is that, should the platter move with respect to the motor due to vibration, the belt will stretch and contract as it settles. The speed will vary because of b .......

374: Vinyl Asylum, How are you calculating 8db? (0.00)
Posted by Lew on 2020-02-23, 09:48:56 (71.163.180.237)
Are you basing that on the difference in db between 0.3mV and 2.0mV? Based on something John Ellison wrote above, it did occur to me that my own method of just adding the 42db gain of the phono sectio .......

375: Tube DIY Asylum, RE: High input or output impedance (0.00)
Posted by Lew on 2020-02-20, 08:55:04 (71.163.180.237)
Based on the Newtonian Mechanics I was taught in college, Energy is the potential to do work. Potential energy may be present in a system and measurable, but unless that energy is used/dissipated, no .......

376: Vinyl Asylum, Hold on there for one minute..... (0.00)
Posted by Lew on 2020-02-19, 13:53:45 (71.163.180.237)
What is it you want? Do you want a device to boost the output of an LOMC cartridge so that you can still use the C28? (That's what I think you want, in any case.) If so, then there are two very differ .......

377: Vinyl Asylum, Dave,... Why do you feel screwed? (0.00)
Posted by Lew on 2020-02-18, 09:11:01 (71.163.180.237)
In your previous thread, you were asking about mating your Dynavector cartridge with a Mac C28 preamplifier. Cougar is correct; in my post just above, I was referring to that cartridge, which has an o .......

378: Tube DIY Asylum, RE: High input or output impedance (0.00)
Posted by Lew on 2020-02-18, 07:39:45 (71.163.180.237)
Phew! Glad you said it. .......

379: Vinyl Asylum, RE: well...now I'm screwed (0.00)
Posted by Lew on 2020-02-17, 19:13:49 (71.163.180.237)
As I recall, the very first MC that hit the market in a big way was the Supex, in the early 70s. .......

380: Vinyl Asylum, RE: well...now I'm screwed (0.00)
Posted by Lew on 2020-02-17, 19:11:32 (71.163.180.237)
John raises a point that I had not considered properly when I responded to the previous thread on this subject. That is that the 42db gain of the phono stage when driven by the Dynavector cartridge m .......

381: Vinyl Asylum, RE: well...now I'm screwed (0.00)
Posted by Lew on 2020-02-17, 18:34:59 (71.163.180.237)
Have you listened to the system driven by the C28 with the 0.3mV cartridge? If so, and if you aren't satisfied, what's the problem? .......

382: Vinyl Asylum, Yes, the phono stage that is labeled as "MM" has inadequate gain, but... (0.00)
Posted by Lew on 2020-02-16, 13:14:24 (71.163.180.237)
in this case the linestage section of the C28 has much more than average gain for a linestage, adding another 20db. What counts is the total gain from phono input to linestage output, which is 62db. 6 .......

383: Vinyl Asylum, I don't necessarily disagree (0.00)
Posted by Lew on 2020-02-16, 08:43:48 (71.163.180.237)
But there probably is some combination of amplifier (that might require more than 1V for full output) and low efficiency speaker that might sound "anemic" to a particular listener with that phono setu .......

384: Vinyl Asylum, You CAN do all that you say, but... (0.00)
Posted by Lew on 2020-02-16, 08:39:32 (71.163.180.237)
my point was that most amplifiers are driven to their full output by a 1V input. And what counts is the output from the preamplifier, in this case which includes the unusually high amount of gain from .......

385: Vinyl Asylum, An SUT might be way overkill (0.00)
Posted by Lew on 2020-02-14, 12:49:43 (71.163.180.237)
A 1:10 SUT would yield an output near to 4V, by my calculations. .......

386: Vinyl Asylum, If the C28 is typically "quiet",... (0.00)
Posted by Lew on 2020-02-14, 12:48:23 (71.163.180.237)
then I calculate 62db of gain on an 0.3mV signal (keeping also in mind that the actual music output will be typically a bit better than that, especially on transients) gives a net Vout = 377mV. If the .......

387: Vinyl Asylum, RE: Mcintosh C28 Phono Stage...MM or MC? (0.00)
Posted by Lew on 2020-02-14, 12:39:25 (71.163.180.237)
It doesn't make a darn bit of difference what turntable you use with what preamplifier. What matters is does the cartridge have enough output to drive its phono section. For that, see below. ::: TOPIC .......

388: Vinyl Asylum, Back to the main question... (0.00)
Posted by Lew on 2020-02-14, 12:37:32 (71.163.180.237)
I think 62db of gain overall is not necessarily out of the question for the cartridge output of 0.3mV, but the risk is that the SQ will be anemic at best. There is no penalty for trying. The hooker he .......

389: Tube DIY Asylum, What Tre' said. (0.00)
Posted by Lew on 2020-02-13, 08:31:40 (71.163.180.237)
I was the guy who suggested the simple solution. With Tre's math in mind, you might consider experimenting with different values of capacitor around the .033uF value, until you find a good blend with .......

390: Tube DIY Asylum, RE: amp with built in crossover (0.00)
Posted by Lew on 2020-02-10, 08:25:52 (71.163.180.237)
Slope? Active versus passive? The very simplest thing if you want a 6 db per octave slope and passive is OK is to just stick a capacitor in front of the input jack. Along with the grid resistor this w .......

391: Tube DIY Asylum, RE: 20 years, is it time to recap? (0.00)
Posted by Lew on 2020-02-08, 10:56:51 (71.163.180.237)
I would think you can find good 1000uF/350V electrolytics for less than $40 each. Have you tried Mouser or Digikey? Their on-line catalogs are excellent for shopping and then buying. If you can't find .......

392: Vinyl Asylum, RE: IMF Transcription 300 (0.00)
Posted by Lew on 2020-02-08, 10:39:10 (71.163.180.237)
I do not disagree with you. As I attempted to emphasize, I just wanted to point out that there is another school of thought. And I don't think you play records with two tonearms where one is hooked up .......

393: Vinyl Asylum, RE: IMF Transcription 300 (0.00)
Posted by Lew on 2020-02-07, 20:11:01 (71.163.180.237)
I'll just be a devil's advocate here. The fact that the Micro Seiki test gave the results described does not prove that LPs can't sound excellent enough to satisfy a discerning listener, without vacuu .......

394: Vinyl Asylum, RE: IMF Transcription 300 (0.00)
Posted by Lew on 2020-02-07, 08:18:48 (71.163.180.237)
Too bad that low compliance became so fashionable.My favorite MCs are among the few high compliance options, and I have come to think that matters. .......

395: Tube DIY Asylum, I gather you are measuring V across the cathode R (0.00)
Posted by Lew on 2020-02-05, 09:05:34 (71.163.180.237)
What is the value of R? I usually think of bias in terms of current. Also, if its push-pull, perhaps your perception that the sound was "off" is most due to imbalance between the two phases, rather th .......

396: Vinyl Asylum, I love it already... (0.00)
Posted by Lew on 2020-02-05, 08:59:56 (71.163.180.237)
Mahvelous to look at. And you know, to look good is to sound good, as Fernando almost said. .......

397: Vinyl Asylum, RE: Dumb tonearm question (0.00)
Posted by Lew on 2020-02-04, 11:06:39 (71.163.180.237)
The cardas LP is great for loosening up the suspension of a new cartridge or one that has been in storage. So if you used it and thought you were breaking in the tonearm wires, it's at least equally i .......

398: Vinyl Asylum, Yes, and cheaper by far than some alternative forms of "variety". (0.00)
Posted by Lew on 2020-02-04, 08:38:45 (71.163.180.237)
nt .......

399: Vinyl Asylum, I have 5 up and running,... (0.00)
Posted by Lew on 2020-02-03, 20:27:31 (71.163.180.237)
into two different audio systems. Three turntables on my "main" system and two on my basement man cave system. A part of me knows this is crazy, but it's also very interesting to me to switch among di .......

400: Vinyl Asylum, RE: The owners manual says... (0.00)
Posted by Lew on 2020-02-01, 14:50:06 (71.163.180.237)
They do have a point, although poorly stated if they don't want to scare away buyers. Transformers do vibrate, and those vibrations can produce a very faint noise resembling a hum. But you shouldn't b .......

401: Vinyl Asylum, RE: Tr-Art S-Series phono stage... (0.00)
Posted by Lew on 2020-02-01, 14:46:03 (71.163.180.237)
I just heard of it, thanks to you. Even their website has no info that I can find, except to say that a phono stage is in the works. Can you provide a URL? .......

402: Vinyl Asylum, RE: Loved the Grace but gave up on it too soon... (0.00)
Posted by Lew on 2020-01-30, 10:36:20 (71.163.180.237)
I use a Grace Ruby with a SS OCL re-tip. I've installed it on two different tonearms and two different turntables. In the first 10-20 hours, maybe there was occasional sibilance; I cannot recall for s .......

403: Vinyl Asylum, +1 on the ART7 (0.00)
Posted by Lew on 2020-01-30, 09:04:16 (71.163.180.237)
It took a while for my ART7 to break in, during which time it might have been said to sound a bit too "clinical" for my taste. But after 30-40 hours, it has really bloomed, and I agree with John's ass .......

404: Vinyl Asylum, Kit or assembled? (0.00)
Posted by Lew on 2020-01-27, 16:42:10 (71.163.180.237)
John Ellison built the kit, did he not? He liked it. .......

405: Vinyl Asylum, !Riverstone costs only a bit more or less than the Shure! (0.00)
Posted by Lew on 2020-01-27, 09:38:27 (71.163.180.237)
A no brainer. .......

406: Vinyl Asylum, RE: Probably because I do most of my listening on headphones. (0.00)
Posted by Lew on 2020-01-27, 09:33:08 (71.163.180.237)
Perhaps if you listened more often to loudspeakers as opposed to headphones you might feel differently. .......

407: Vinyl Asylum, RE: So which scale do you use and does it weigh at record height? (0.00)
Posted by Lew on 2020-01-26, 13:40:23 (71.163.180.237)
What I use now is an Ortofon DS3. They make a few different models. Nowadays, no respectable digital scale should have the issue with the height of the weigh pan. If a particular product lacks this fe .......

408: Vinyl Asylum, Lalo and Dizzy (0.00)
Posted by Lew on 2020-01-26, 08:36:54 (71.163.180.237)
Any of several of their collaborations. .......

409: Vinyl Asylum, RE: Tracking too heavy! :( (0.00)
Posted by Lew on 2020-01-26, 08:29:07 (71.163.180.237)
Although I think it is unlikely that this is an issue, you might take the trouble to make sure that the weigh pan on your new scale is truly non-magnetic. I used a popular one for a few years before .......

410: Tube DIY Asylum, RE: Another Mouser story (0.00)
Posted by Lew on 2020-01-24, 14:45:01 (71.163.180.237)
The company has to pay someone to read the order sheet, go to a bin, find the resistor, package it, address the package, etc. It's a wonder to me they would be able to do that for the total cost of $1 .......

411: Tube DIY Asylum, RE: Another Mouser story (0.00)
Posted by Lew on 2020-01-24, 13:28:55 (71.163.180.237)
I don't know how Mouser and Digikey can even afford to be bothered with guys like us. They're great. .......

412: Vinyl Asylum, RE: The movie was extremely depressing, but the music was terrific. (0.00)
Posted by Lew on 2020-01-23, 18:17:44 (71.163.180.237)
What I love about movie soundtrack albums is that some of the very best of them came from some of the most mediocre and forgotten movies. And soundtracks from forgotten movies are often given away or .......

413: Tweakers' Asylum, RE: Can you list what it did better? (0.00)
Posted by Lew on 2020-01-23, 10:09:46 (71.163.180.237)
Directionality, if there is any, of a nonpolar capacitor is said to depend upon which lead is connected to the outer foil. So I don't know why the directive from Dueland would seem "counter-intuitive" .......

414: OTL Asylum, There's obviously nothing wrong with you,... (0.00)
Posted by Lew on 2020-01-20, 13:03:22 (71.163.180.237)
because you DID have something wrong. Any idea why a blown fuse didn't cause profound problems, apparently since you only found it by checking fuses? .......

415: Vinyl Asylum, RE: When I've cleaned the inside of my gold plated female leads some kind of black grunge came off. (0.00)
Posted by Lew on 2020-01-20, 12:55:55 (71.163.180.237)
Could it be residue from whatever you use to "clean" the contacts? Never seen it is why I suggest that. .......

416: Vinyl Asylum, RE: Oxidation On Removeable Head Shell Contacts (0.00)
Posted by Lew on 2020-01-19, 08:01:23 (71.163.180.237)
What you suggest is always a good idea, and most of us don't do it, I'd wager. But most female headshell leads are gold plated so as to prevent oxidation, are they not? Similarly the pins look to be g .......

417: Tweakers' Asylum, Google "Dayton-Wright ESL"... (0.00)
Posted by Lew on 2020-01-18, 08:26:23 (71.163.180.237)
And you'll see what I'm talking about. As I recall, they were quite power hungry. I heard them in various audio salons; I couldn't afford them either. .......

418: SET Asylum, RE: There is a terrible faking of ECC802S Telefunken going on! (0.00)
Posted by Lew on 2020-01-16, 14:12:56 (71.163.180.237)
These days, it's safest to assume that when you see "NOS TFK 802S" tubes for sale, they are fake. Same goes for 801S and 803S types. .......

419: Vinyl Asylum, Thanks. (0.00)
Posted by Lew on 2020-01-16, 14:03:19 (71.163.180.237)
nt .......

420: Vinyl Asylum, Help! (0.00)
Posted by Lew on 2020-01-16, 10:07:01 (71.163.180.237)
So, say you're like me and have absolutely no digital capability built into your audio system, except for an Ayre C5Xe-mp and an Oppo BDP105 (and a bunch of CDs/SACDs), none of which is useful for rec .......

421: Vinyl Asylum, RE: Now, this is more like it. (0.00)
Posted by Lew on 2020-01-15, 09:29:12 (71.163.180.237)
So you've bought both the AT and the MMF in the past week? .......

422: Vinyl Asylum, ART7 and ART9 (0.00)
Posted by Lew on 2020-01-12, 11:00:19 (71.163.180.237)
I guess with every new crop of Audio Technica cartridges, we tend to shove their previous new entries into the background, but the ART7 and ART9 are still excellent by any standard. .......

423: Vinyl Asylum, I had one of those too, along with a Transcriptors Reference TT (0.00)
Posted by Lew on 2020-01-10, 15:41:52 (71.163.180.237)
Much later on in my audio life. I wouldn't have thought of adjusting overhang, even then, because I think the headshell of that tonearm also had no slots, just holes. But I could be wrong. ::: TOPIC:: .......

424: Vinyl Asylum, RE: That can be a problem with the AR XA. (0.00)
Posted by Lew on 2020-01-10, 08:19:33 (71.163.180.237)
I used to own an AR-XA, or whatever it was called then, back in 1970-71. I can date it precisely only because I was an intern working in a hospital night and day that year. I never worried about overh .......

425: Vinyl Asylum, Great minds think alike... (0.00)
Posted by Lew on 2020-01-09, 16:00:14 (71.163.180.237)
Just kidding, for any belt-drivers out there. .......

426: Vinyl Asylum, RE: Easy, mate. (0.00)
Posted by Lew on 2020-01-09, 08:45:52 (71.163.180.237)
I hate to bring this up, really I do because it wouldn't concern me much if I were you, but for cartridges there is unfortunately no standard distance between screw holes for mounting to a headshell a .......

427: Vinyl Asylum, I'm sure I'm missing the point... (0.00)
Posted by Lew on 2020-01-08, 17:19:42 (71.163.180.237)
Are you suggesting that your findings are due to the fact that, if you change overhang without changing the height of the tonearm pivot, you will thereby alter SRA, and the differences in tonal balanc .......

428: Vinyl Asylum, RE: New SL1200 or vintage Yamaha GT-2000? (0.00)
Posted by Lew on 2020-01-07, 16:30:02 (71.163.180.237)
Seems he wants a direct-drive and maybe specifically a direct-drive turntable with a coreless motor, like either the GT2000 or the Technics G series. Otherwise, one can make an endless list of $4000 a .......

429: Vinyl Asylum, RE: New SL1200 or vintage Yamaha GT-2000? (0.00)
Posted by Lew on 2020-01-07, 10:42:41 (71.163.180.237)
You can't always rely on being able to find a really nice GT 2000 in Tokyo, unless you know someone is holding one for you before you go. They do turn up in audio stores, but it seems to me they sell .......

430: Vinyl Asylum, RE: What do you expect from NM grade LPs? (0.00)
Posted by Lew on 2020-01-07, 10:32:51 (71.163.180.237)
The disc union store where I usually shop is near the Ochanomizu station. They have moved into progressively larger quarters since about 12 years ago when I first used to shop there. Like I mentioned .......

431: Vinyl Asylum, RE: What do you expect from NM grade LPs? (0.00)
Posted by Lew on 2020-01-07, 09:06:27 (107.77.203.114)
Why I like to buy LPs when I'm in Tokyo. At Disk Union stores, if a used LP is rated "A" for condition it will look perfect and play perfectly, and you need not even inspect it before purchase. The al .......

432: Tweakers' Asylum, RE: plastic trash bags (0.00)
Posted by Lew on 2020-01-06, 08:51:57 (71.163.180.237)
Perhaps you are too young to remember Dayton Wright electrostatic loudspeakers. The panels were surrounded by an inert gas in a sealed bag, so in effact you were listening to the bag vibrate. The iner .......

433: Vinyl Asylum, RE: The real need for a digital VTF scale? (0.00)
Posted by Lew on 2020-01-06, 08:42:08 (107.77.203.166)
Take a strong magnet and check that it does not attract the cross member. Possibly it's not a problem with MM or HOMC cartridges but it was with my two samples of the Shure SFG with LOMCs. I don't see .......

434: Vinyl Asylum, RE: The real need for a digital VTF scale? (0.00)
Posted by Lew on 2020-01-05, 14:46:37 (71.163.180.237)
After having used a Shure scale for at least 25-30 years, and having noticed the fact that digital scales are readily available for not so much cost, I went digital. I don't regret it, except I found .......

435: Vinyl Asylum, The warnings that apply to the ML1 (0.00)
Posted by Lew on 2020-01-04, 10:17:23 (71.163.180.237)
remind me of the old SNL commercial spoof for "Happy Fun Ball". .......

436: Tube DIY Asylum, RE: safety question (0.00)
Posted by Lew on 2020-01-02, 07:34:49 (71.163.180.237)
You can also visually check for the bleeder resistors that you think were installed by the factory: These would be (like Tre' says) "medium value" resistors connected from the plus terminal to the min .......

437: Vinyl Asylum, RE: Assistance Needed In Identifying An Ikeda Cartridge? (0.00)
Posted by Lew on 2019-12-31, 13:01:26 (71.163.180.237)
For what it's worth, and as I mentioned on your other thread, my son translated the kanji from a less good photo and thought it conveys the sound "tsuji", which he thinks might be a family name. Perha .......

438: Tube DIY Asylum, RE: Digital - volume is in software. (0.00)
Posted by Lew on 2019-12-31, 08:37:54 (71.163.180.237)
If your volume control is operating in the digital domain, do you notice any loss of SQ at low volume levels? .......

439: Vinyl Asylum, RE: Spinning?! (0.00)
Posted by Lew on 2019-12-29, 19:39:12 (71.163.180.237)
I'm not spinning anything right now, because if I was I wouldn't be wasting the time on my computer. But this afternoon I listened to a Julie London LP and a Dakota Staton LP, both of which I purchase .......

440: Vinyl Asylum, RE: Am I too OCD? (0.00)
Posted by Lew on 2019-12-28, 09:36:30 (71.163.180.237)
I don't know if the RR is making things "better", but it's showing you not to worry about speed fluctuations. Actually, for a situation where there is no feedback from the RR to the VPI controller, yo .......

441: Vinyl Asylum, RE: All you're missing now is Adjust + (0.00)
Posted by Lew on 2019-12-26, 18:13:27 (71.163.180.237)
I didn't know about the differential effect on lateral vs vertical modulation, but are you disagreeing with me, when I say that adjusting azimuth is not a very effective way to correct for channel imb .......

442: Vinyl Asylum, RE: OK, why does it make a difference? (0.00)
Posted by Lew on 2019-12-26, 08:56:25 (71.163.180.237)
Smartractor also has interchangeable spindle holes so there's no inaccuracies due to spindle fit. It also has mirrored grid patterns. .......

443: Vinyl Asylum, RE: OK, why does it make a difference? (0.00)
Posted by Lew on 2019-12-25, 12:57:42 (107.77.204.137)
Smartractor also has interchangeable spindle holes so there's no inaccuracies due to spindle fit. It also has mirrored grid patterns. .......

444: Vinyl Asylum, RE: All you're missing now is Adjust + (0.00)
Posted by Lew on 2019-12-25, 08:56:01 (71.163.180.237)
Azimuth does not much affect channel balance. It primarily affects crosstalk. Minimizing crosstalk is the end goal of azimuth adjustments. .......

445: Vinyl Asylum, Now I get it, but... (0.00)
Posted by Lew on 2019-12-23, 20:50:07 (71.163.180.237)
like the other guy said, try various grounding schemes to get rid of hum with an SUT. This is always assuming there is not some defect in a ground connection, somewhere. .......

446: Tweakers' Asylum, RE: Tre', have you seen this? (0.00)
Posted by Lew on 2019-12-23, 15:25:51 (71.163.180.237)
That's what bugs me, when proponents of very expensive fuses wax profound on the myriad ways in which the sound improved. The superlatives that get thrown around leave me bewildered and skeptical. How .......

447: Vinyl Asylum, RE: What ICs have you found most effective at minimizing/eliminating hum using an SUT? (0.00)
Posted by Lew on 2019-12-23, 15:15:17 (71.163.180.237)
What makes you think that the ICs are responsible for hum, with an SUT? So, if you start with an MM phono stage and a pair of ICs that in combination do not exhibit hum, and then if you add an SUT to .......

448: Tube DIY Asylum, You're paying for the "AN" (AudioNote) prefix (0.00)
Posted by Lew on 2019-12-22, 17:50:33 (71.163.180.237)
There used to be tantalum resistors without the AN association that were only expensive, not ridiculously expensive. Angela Instruments had them, and I think Parts Connexion carries a few values still .......

449: Vinyl Asylum, RE: Not Likely (0.00)
Posted by Lew on 2019-12-22, 11:39:19 (71.163.180.237)
How do you account for bacteria that eat oil slicks and the like? Oil and water are immiscible. .......

450: Vinyl Asylum, RE: Gene Krupa: Percussion King (0.00)
Posted by Lew on 2019-12-20, 16:34:06 (71.163.180.237)
I was always taken with what I heard to be the unusual approach of Joe Morello, when he played with Brubeck and after that. The Brubeck Quartet played in some crazy time signatures, and Morello was at .......

451: Vinyl Asylum, RE: My vintage B&O 8002 with MMC-1 (0.00)
Posted by Lew on 2019-12-17, 17:25:37 (71.163.180.237)
I was lucky to find an NOS MMC1 several years ago. Then it sat in its box for a few more years until I finally started listening to it about 6 months ago. I think it's a fabulous cartridge, one of the .......

452: Tube DIY Asylum, RE: DDS signal generators - any good for us? (0.00)
Posted by Lew on 2019-12-17, 08:56:10 (71.163.180.237)
If you took an ordinary RBCD player and used a test CD that contained sine wave tones of various frequencies (at 16 bit resolution), I would think that such a source could be used for testing amplifie .......

453: Vinyl Asylum, RE: What mm cartridge to buy? (0.00)
Posted by Lew on 2019-12-17, 07:48:20 (71.163.180.237)
What has the bond between stylus and cantilever got to do with transduction? Which is to ask why your experience is causing you to give up on MC cartridges? If you are really determined to avoid a rep .......

454: Vinyl Asylum, RE: cartridge output (0.00)
Posted by Lew on 2019-12-17, 07:41:32 (71.163.180.237)
5 mV not 0.5 mV. .......

455: Tube DIY Asylum, RE: AR Dual 50 (0.00)
Posted by Lew on 2019-12-10, 17:56:33 (71.163.180.237)
Yes, I do recall the Paoli 60M, although I never heard it. I must be thinking of Coggins himself. Did you, by any chance, know TL Hawkins, who lived in Arlington back then and was the friend of mine w .......

456: Vinyl Asylum, RE: Spinning? which nobody seems to do here much anymore (0.00)
Posted by Lew on 2019-12-09, 15:13:09 (71.163.180.237)
Listening to a bunch of vocals: Lambert, Hendricks, and Ross; Julie London; Gloria Lynn; etc, via an Ortofon MC2000 using a current drive input stage into the MM phono section of a Manley Steelhead. T .......

457: Tube DIY Asylum, RE: AR Dual 50 (0.00)
Posted by Lew on 2019-12-09, 13:22:19 (71.163.180.237)
Who was that other guy associated with Paoli? Or am I thinking Coggins? The guy I have in mind but cannot name was a fervent Audio Research seller and supporter. .......

458: Vinyl Asylum, Actually, I was only half joking... (0.00)
Posted by Lew on 2019-12-09, 13:21:01 (71.163.180.237)
When I see "Four Seasons", I am thinking Frankie Valli. He's right up there with that other Italian, Vivaldi. In my book. .......

459: Vinyl Asylum, RE: Dennesen Soundtracktor (0.00)
Posted by Lew on 2019-12-09, 13:18:23 (71.163.180.237)
I've had mine for many decades. I can't even begin to guess, but possibly as long ago as 1980. It has the tiny indentation for setting the stylus tip. Very aggravating, because I cannot usually see it .......

460: Vinyl Asylum, It's a good thing you posted a photo of the album cover... (0.00)
Posted by Lew on 2019-12-08, 22:36:25 (71.163.180.237)
I was wondering whether the new Four Seasons album included "Big Girls Don't Cry". .......

461: Vinyl Asylum, RE: OK! So now that we have that settled... (0.00)
Posted by Lew on 2019-12-07, 06:29:59 (71.163.180.237)
Yeah, but some of the data on VE are erroneous, and in the end it's a subjective judgement that one has to make armed with very few "facts". .......

462: Tube DIY Asylum, AR Dual 50 (0.00)
Posted by Lew on 2019-12-05, 10:21:54 (71.163.180.237)
Back in the early days of AR, their principle amplifier product was the Dual 50 (also the very expensive Dual 100). During the course of about 5 years, that model underwent many many changes, always t .......

463: Tweakers' Asylum, RE: Boutique fuses hype? (0.00)
Posted by Lew on 2019-12-05, 09:53:27 (71.163.180.237)
They look to be commercial products that have been silver plated at the fuse contact points and then cryo-treated, according to Acme. So, I assume the basic fuseholder that they start with is UL appro .......

464: Vinyl Asylum, RE: Underhung Tonearm null point??? (0.00)
Posted by Lew on 2019-12-04, 08:00:36 (71.163.180.237)
Very interesting. Thanks. .......

465: Vinyl Asylum, RE: Underhung Tonearm null point??? (0.00)
Posted by Lew on 2019-12-03, 09:07:39 (71.163.180.237)
John, I yield to you any time we're talking about tonearm alignment (and in many other instances as well), but for an underhung tonearm with no headshell offset, it seems to me that tracking angle err .......

466: Tweakers' Asylum, RE: A message from none other than Dr. Floyd Toole (0.00)
Posted by Lew on 2019-12-03, 09:00:13 (71.163.180.237)
But my dog, Farfel, is very sensitive to phase shifts. .......

467: Tweakers' Asylum, RE: Boutique fuses hype? (0.00)
Posted by Lew on 2019-12-03, 08:58:30 (71.163.180.237)
One issue that comes up is whether the truly expensive fuses have been tested according to UL standards and thus whether they indeed will function as advertised, if and when the time comes. Like will .......

468: OTL Asylum, RE: R&R tubes in Transcendent T8-LN (0.00)
Posted by Lew on 2019-12-03, 08:45:01 (71.163.180.237)
I share Roger's concern for the tube sockets. If you've been using the amplifier regularly since 2001, and if the anode caps are obviously degraded, then I would be concerned that the sockets could be .......

469: Vinyl Asylum, RE: Underhung Tonearm null point??? (0.00)
Posted by Lew on 2019-12-02, 17:03:59 (71.163.180.237)
For an underhung tonearm, there can be only one null point on the surface of an LP. And I agree with your implication that it would be best to select a pivot to spindle distance that places the null p .......

470: Tweakers' Asylum, RE: DC-blocking capacitor (0.00)
Posted by Lew on 2019-11-28, 21:56:24 (74.7.239.138)
What Palustris said, unless the low frequency cut off is of no importance, which seems unlikely. Two other points: R in the equation is the input impedance in parallel with the output Z of the preampl .......

471: Vinyl Asylum, I found a website... (0.00)
Posted by Lew on 2019-11-22, 21:50:42 (71.163.180.237)
that would seem to indicate the earliest issues were all 6-eye, whether mono or stereo. And that my 2-eye stereo example is likely from the early 60s. I must have bought it to replace the truly early .......

472: Tube DIY Asylum, Yep... (0.00)
Posted by Lew on 2019-11-22, 07:23:24 (71.163.180.237)
I've used the K&K Compact Cascode CCS kits, and I like them too. You get a free one if you can say "Compact Cascode CCS kit" ten times, rapidly, without stumbling. The cascode version is still very sm .......

473: Vinyl Asylum, RE: Ghost (0.00)
Posted by Lew on 2019-11-22, 07:16:33 (71.163.180.237)
I think it's more about the placement of the motor. TT's with inboard motors are more likely to induce hum from those Grado's that tend to hum. Of course, shielding does help to mitigate the problem. .......

474: Vinyl Asylum, Was the first pressing in mono or stereo or both? (0.00)
Posted by Lew on 2019-11-21, 16:05:21 (71.163.180.237)
I am quite sure I bought my first copy of KOB when I was not yet old enough to drive a car. I remember taking the bus to the main record store in New Haven, CT, near the Yale campus. This was shortly .......

475: Vinyl Asylum, RE: Duke Ellington meets Coleman Hawkins (0.00)
Posted by Lew on 2019-11-20, 07:38:35 (71.163.180.237)
EMI pressed in the UK were always excellent. I've got Ella and Louis original EMI monos, and the sonics are great but I'm not sure the equalization is RIAA. .......

476: Tube DIY Asylum, Have you heard it? (0.00)
Posted by Lew on 2019-11-18, 19:02:22 (71.163.180.237)
Not bloody likely, I'd guess, since you'd have to go to Australia, unless Naz sent one over here. Anyway, he's a very nice guy and very willing to explain his ideas. .......

477: Tube DIY Asylum, RE: I saw a LCR type circuit and it had... (0.00)
Posted by Lew on 2019-11-13, 20:32:41 (71.163.180.237)
Maybe Dave can enlighten us. .......

478: Vinyl Asylum, RE: help! needed with MC cart loading- I don't get it (0.00)
Posted by Lew on 2019-11-13, 20:30:38 (71.163.180.237)
This at first look is unnecessarily complicated. If you do place a 7.222K resistor on the secondary side, in parallel with the built in 47K load resistor at the phono input, the resulting load on the .......

479: Tube DIY Asylum, RE: Haven't seen Naz post for a while. (0.00)
Posted by Lew on 2019-11-13, 07:54:02 (71.163.180.237)
Naz privately sent me a couple of phono stage schematics using the 6C 45 in an LCR type circuit. He built at least one, with inductors custom wound for him by Dave slagle. I hope it's OK to reveal tha .......

480: Vinyl Asylum, RE: Question/Recommendation on MC Step-Up Transformer (0.00)
Posted by Lew on 2019-11-13, 07:11:44 (71.163.180.237)
According to the SS website, the recommended load resistance for the Zephyr low output is "470 ohms or greater". You can achieve 470 ohms by using an SUT with a 1:10 turns ratio into the typical 47K l .......

481: Vinyl Asylum, RE: Well, sorta similar looks anyway. (0.00)
Posted by Lew on 2019-11-12, 18:51:15 (71.163.180.237)
Someone else said somewhere else that the DD turntable incorporated into the Vanquish IS their new $15K DD turntable, plain and simple. I don't know whether that's all there is to it. If so, the Vanqu .......

482: Tube DIY Asylum, Naz (0.00)
Posted by Lew on 2019-11-12, 06:25:55 (71.163.180.237)
Former contributor, Naz, has built a few phono stages, most notabliy an LCR type,using the 6C45II. He has been generous in sharing his schematics. He seems to make it work without an excessive use of .......

483: Vinyl Asylum, I am pretty sure it's direct-drive (0.00)
Posted by Lew on 2019-11-12, 06:20:41 (71.163.180.237)
nt .......

484: Tweakers' Asylum, RE: opamps (0.00)
Posted by Lew on 2019-11-06, 14:42:28 (71.163.180.237)
I'm not sure why you call them "Chinese". Aren't nearly all of them made in China? Albeit many if not most were developed in the West. .......

485: Tweakers' Asylum, Thanks for correcting my estimate of the sensitivity. (0.00)
Posted by Lew on 2019-11-04, 14:14:25 (71.163.180.237)
I guess I should have said "tens of mV". .......

486: Vinyl Asylum, RE: Viv Lab Rigid Tonearm (0.00)
Posted by Lew on 2019-11-04, 14:02:23 (71.163.180.237)
I've thought long and hard about buying a Viv Float, just because I am so pleased with the actual performance of my RS Labs RS-A1 underhung/offset-less tonearm, which in some ways is even more weird t .......

487: Vinyl Asylum, It's really hard to explain in words... (0.00)
Posted by Lew on 2019-11-04, 14:00:04 (71.163.180.237)
I think of a kid's wagon with four wheels and a pull handle that is attached to the axle of the front pair of wheels. If you pull it at an angle, you generate a side force that disrupts the path in th .......

488: Tweakers' Asylum, What uncle Mike said... (0.00)
Posted by Lew on 2019-11-04, 07:36:07 (71.163.180.237)
There are modern scopes that can do exactly what you propose. The sensitivity for a difference measurement would depend upon the actual equipment you use. I am sure you can get down to millivolts of d .......

489: Vinyl Asylum, RE: Skating forces and a zero offset tonearm (0.00)
Posted by Lew on 2019-11-04, 07:28:52 (71.163.180.237)
I think I wrote this somewhere else not too long ago. For a tonearm with no headshell offset, and only if it UNDERhangs the spindle, there will be only one point of tangency to the groove wall across .......

490: Vinyl Asylum, Verdier La Platine (0.00)
Posted by Lew on 2019-11-01, 14:45:17 (71.163.180.237)
is the big daddy of magnetic bearings. My Kenwood L07D also floats the platter in the vertical plane via magnetics, receiving some but not all vertical force on the thrust plate, and I think at least .......

491: Vinyl Asylum, RE: Actually, we don't,... (0.00)
Posted by Lew on 2019-10-30, 11:28:01 (71.163.180.237)
You evidently know more about synthetic motor oils than I do. I use the weight and brand recommended originally for my Kenwood L07D by a well known person who uses and services L07Ds and runs the L07D .......

492: Tweakers' Asylum, RE: Where in my post did I say "cure all"? You can read anything (0.00)
Posted by Lew on 2019-10-30, 09:11:44 (71.163.180.237)
I apologize if my comment caused you distress. It was not meant to do that. I thought we were having a back and forth discussion, a friendly one. .......

493: Vinyl Asylum, RE: Yes. n/t (0.00)
Posted by Lew on 2019-10-30, 09:09:41 (71.163.180.237)
I'm pleased you've recognized my brilliance. Thanks. .......

494: Vinyl Asylum, Actually, we don't,... (0.00)
Posted by Lew on 2019-10-30, 09:07:30 (71.163.180.237)
because there pretty much are no data for turntable lubricants except for the occasional manufacturer (like Technics) who markets a particular lubricant. I admit I do use a synthetic 20W motor oil in .......

495: Vinyl Asylum, RE: Yes. n/t (0.00)
Posted by Lew on 2019-10-29, 15:05:07 (71.163.180.237)
I see that I was using the term "monoplatelet" (whatever that is) instead of the actual term "nanoplatelet" (whatever that is). This product can't miss in that it combines two of the most current (aud .......

496: Vinyl Asylum, Baldness has not affected my hearing... (0.00)
Posted by Lew on 2019-10-29, 12:49:21 (71.163.180.237)
so far as I can tell. However, my wife was complaining the other day that I was not hearing her. Perhaps that is due to baldness. .......

497: Tweakers' Asylum, RE: Use of Magnet Technology in Audio (0.00)
Posted by Lew on 2019-10-29, 10:21:31 (71.163.180.237)
I consulted a friend who is well known in the audio business and is especially knowledgeable around transformers, inductors, etc, which seems pertinent to this tweak. He was fairly noncommittal. It se .......

498: Vinyl Asylum, So, owners manual, yes; service manual, no? (0.00)
Posted by Lew on 2019-10-29, 09:02:23 (71.163.180.237)
But there's not much in the way of arcane circuitry in relation to a belt-drive turntable, unless you count the Phoenix Engineering-derived add-ons, which I don't think is your issue. Anyway, that was .......

499: Vinyl Asylum, RE: I have owned an SOTA for over 20 years... (0.00)
Posted by Lew on 2019-10-29, 08:40:00 (71.163.180.237)
But as an owner of a SOTA turntable, aren't you therefore qualified to have the owners manual and other technical data relevant to your turntable, direct from SOTA? If so, why do you care that it is n .......

500: Vinyl Asylum, You're thinking of using this oil as turntable bearing lubricant? (0.00)
Posted by Lew on 2019-10-28, 09:27:04 (71.163.180.237)
If I've got that right, what would be the possible benefit of "graphene monoplatelets" in that application? The very gentle conditions of use that pertain to a turntable bearing lubricant would probab .......

Found total of 500 records, Query: , Author: Lew in All Forums, Time: 2 sec.

New Search